deck_all the muscles Flashcards
Popliteus - Innervation
Tibial nerve
Popliteus - Origin
Lateral condyle of the femur
Popliteus - Insertion
Proximal, posterior aspect of the tibia
Popliteus - Actions
MEDIALLY ROTATE the flexed tibiofemoral joint
FLEX the tibiofemoral joint
Popliteus - Palpation key
Prone - with knee flexed, resist medial rotation of the knee
Tibialis Posterior - Innervation
Tibial nerve
Tibialis Posterior - origin
Proximal, posterior shafts of the tibia and fibula and interosseous membrane
Tibialis Posterior - Insertion
All 5 tarsal bones and bases of 2nd through 4th metatarsals
Tibialis Posterior - Actions
INVERT the subtalar joint
PLANTAR FLEX the talocrural joint
Tibialis Posterior - Palpation Notes
Prone - Resist plantarflexion and inversion of the foot
(Locate medial malleolus, slide posteriorly and proximally off the malleolus into the space between the tibial shaft and the calcaneal tendon)
Flexor Digitorum Longus - Innervation
Tibial nerve
Flexor Digitorum Longus - Origin
Middle, posterior surface of the tibia
Flexor Digitorum Longus - Insertion
Distal phalanges of 2nd through 5th toes
Flexor Digitorum Longus - Actions
FLEX the 2nd through 5th toes at the metatarsophalangeal and interphalangeal joints
Weak PLANTARFLEXION of talocrural joint
INVERT the subtalar joint
Flexor Hallucis Longus - Innervation
Tibial nerve
Flexor Hallucis Longus - Origin
Middle half of posterior fibula
Flexor Hallucis Longus - Insertion
Distal phalanx of the 1st toe
Flexor Hallucis Longus - Actions
FLEX the 1st toe at the metatarsophalangeal and interphalangeal joints
Weak PLANTARFLEXION of talocrural joint
INVERT the subtalar joint
Extensor Digitorum Longus - Innervation
Deep fibular nerve
Extensor Digitorum Longus - Origin
Lateral condyle of the tibia
Anterior shaft of fibula
Interosseous membrane
Extensor Digitorum Longus - Insertion
Middle & distal phalanges of 2nd through 5th toes
Extensor Digitorum Longus - Actions
EXTEND the 2nd through 5th toes at the metatarsophalangeal and interphalangeal joints
DORSIFLEX the talocrural joint
EVERT at the subtalar joint
Fibularis Brevis - Innervation
Superficial fibular nerve
Fibularis Brevis - Origin
Distal 2/3 of lateral fibula
Fibularis Brevis - Insertion
Tuberosity of 5th metatarsal
Fibularis Brevis - Actions
EVERT the subtalar joint
Assist to PLANTAR FLEX the talocrural joint
Plantaris - Innervation
Tibial nerve
Plantaris - Origin
Lateral supracondylar line of the femur
Plantaris - Insertion
Calcaneus via calcaneal tendon
Plantaris - Actions
Weak PLANTARFLEXION of the talocrural joint
Weak FLEXION of the tibiofemoral joint
Plantaris - Palpation notes
Prone - fall Medially off the head of the fibula into the popliteal space between gastrocnemius heads
Gastrocnemius - Innervation
Tibial nerve
Gastrocnemius - Origin
Condyles of the femur posterior surfaces
Gastrocnemius - Insertion
Calcaneus via calcaneal tendon
Gastrocnemius - Actions
FLEX the tibiofemoral joint
PLANTAR FLEX the talocrural joint
Soleus - Innervation
Tibial nerve
Soleus - origin
Soleal line
Proximal, posterior surface of the tibia
Posterior aspect of the head of the fibula
Soleus - insertion
Calcaneus via the calcaneal tendon
Soleus - actions
PLANTAR FLEX the talocrural joint
Fibularis Longus - Innervation
Superficial fibular nerve
Fibularis Longus - Origin
Head of the fibula
Proximal 2/3 of the lateral fibula
Fibularis Longus - Insertion
Base of the 1st metatarsal
Medial cuneiform
Fibularis Longus - Actions
EVERT the subtalar joint
Assist to PLANTAR FLEX the talocrural joint
Tibialis anterior - Innervation
Deep fibular nerve
Tibialis anterior - origin
Lateral condyle of tibia
Proximal lateral surface of tibia
Interosseous membrane
Tibialis anterior - insertion
Base of the 1st metatarsal
Medial cuneiform
Tibialis anterior - actions
INVERT the subtalar joint
DORSIFLEX the talocrural joint
Sartorius - Innervation
Femoral Nerve
Sartorius - Origin
ASIS
Sartorius - Insertion
Proximal, medial shaft of the tibia at the pes anserinus tendon
Sartorius - Actions
FLEX the coxal joint
LATERALLY ROTATE the coxal joint
ABDUCT the coxal joint
FLEX the tibiofemoral joint
MEDIALLY ROTATE the flexed tibiofemoral joint
Gracilis - Innervation
Anterior branch of the Obturator Nerve
Gracilis - Origin
Inferior ramus of the pubis
Gracilis - Insertion
Proximal, medial shaft of the tibia at the pes anserinus tendon
Gracilis - Actions
ADDUCT the coxal joint
MEDIALLY ROTATE the coxal joint
FLEX the tibiofemoral joint
MEDIALLY ROTATE the flexed tibiofemoral joint
Adductor Brevis - Innervation
Obturator Nerve
Adductor Brevis - Origin
Inferior ramus of the pubis
Adductor Brevis - Insertion
Pectineal line and medial lip of the linea aspera
Adductor Brevis - Actions
ADDUCT the coxal joint
MEDIALLY ROTATE the coxal joint
Assist to FLEX the coxal joint
Pectineus - Innervation
Femoral and Obturator Nerves
Pectineus - Origin
Superior ramus of the pubis
Pectineus - Insertion
Pectineal line of the femur
Pectineus - Actions
ADDUCT the coxal joint
MEDIALLY ROTATE the coxal joint
Assist to FLEX the coxal joint
Adductor Magnus - Innervation
Obturator and Sciatic Nerve
Adductor Magnus - Origin
Inferior ramus of the pubis
Ramus of ishium
Ischial tuberosity
Adductor Magnus - Insertion
Medial lip of linea aspera
Adductor tubercle
Adductor Magnus - Actions
ADDUCT the coxal joint
MEDIALLY ROTATE the coxal joint
Assist to FLEX the coxal joint
Posterior Fibers:
EXTEND the coxal joint
TFL - Innervation
Superior gluteal nerve
TFL - Origin
Iliac crest posterior to the ASIS
TFL - Insertion
Iliotibial tract
TFL - Actions
FLEX the coxal joint
MEDIALLY ROTATE the coxal joint
ABDUCT the coxal joint
Adductor Longus - Innervation
Obturator Nerve
Adductor Longus - Origin
Pubic tubercle
Adductor Longus - Insertion
Pectineal line
Medial lip of the linea aspera
Adductor Longus - Actions
ADDUCT the coxal joint
MEDIALLY ROTATE the coxal joint
Assist to FLEX the coxal joint
Rectus Femoris - Innervation
Femoral nerve
Rectus Femoris - Origin
AIIS
Rectus Femoris - Insertion
Tibial tuberosity via patella and patellar tendon
Rectus Femoris - Actions
FLEXES the coxal joint
EXTENDS the tibiofemoral joint
Vastus Medialis - Innervation
Femoral nerve
Vastus medialis - Origin
Medial lip of the linea aspera
Vastus medialis - Insertion
Tibial tuberosity via the patella and patellar ligament
Vastus Medialis - Actions
EXTENDS the tibiofemoral joint
Vastus Lateralis - Innervation
Femoral Nerve
Vastus Lateralis - Origin
lateral lip of the linea aspera
Gluteal tuberosity
Greater trochanter
Vastus Lateralis - Insertion
Tibial tuberosity via the patella and patellar ligament
Vastus Lateralis - Actions
EXTENDS the tibiofemoral joint
Vastus Intermedius - innervation
Femoral nerve
Vastus intermedius - Origin
Anterior and lateral shaft of the femur
Vastus Intermedius - Insertion
Tibial tuberosity via the patella and patellar ligament
Vastus Intermedius - Actions
EXTEND the tibiofemoral joint
Biceps Femoris - Innervation
Sciatic Nerve:
Long Head - TIBIAL branch
Short Head - FIBULAR branch
Biceps Femoris - Origin
LONG HEAD:
Ischial tuberosity
SHORT HEAD:
Lateral lip of the linea aspera
Biceps Femoris - Insertion
Head of the fibula
Biceps Femoris - Actions
FLEX the tibiofemoral joint
LATERALLY ROTATE the flexed tibiofemoral joint
Long Head:
EXTEND the coxal joint
Assist to LATERALLY ROTATE the coxal joint
Bilaterally:
TILT the pelvis POSTERIORLY
Semitendinosus - Innervation
Sciatic nerve - Tibial branch
Semitendinosus - Origin
Ischial tuberosity
Semitendinosus - insertion
Proximal, medial shaft of the tibia at the pes anserinus tendon
Semitendinosus - Actions
FLEX the tibiofemoral joint
MEDIALLY ROTATE the flexed tibiofemoral joint
EXTEND the coxal joint
Assist to MEDIALLY ROTATE the coxal joint
Bilaterally:
TILT the pelvis POSTERIORLY
Semimembranosus - Innervation
Sciatic nerve - tibial branch
Semimembranosus - Origin
Ischial tuberosity
Semimembranosus - Insertion
Posterior aspect of the medial condyle of the tibia
Semimembranosus - Actions
FLEX the tibiofemoral joint
MEDIALLY ROTATE the flexed tibiofemoral joint
EXTEND the coxal joint
Assist to MEDIALLY ROTATE the coxal joint
Bilaterally:
TILT the pelvis POSTERIORLY
SCM - Innervation
Spinal Accessory Nerve (CN XI) C2,3
SCM - Origin
Sternal Head:
Top of the manubrium
Clavicular Head:
Medial 1/3 of the clavicle
SCM - Insertion
Mastoid process of the temporal bone
Lateral portion of the superior nuchal line of the occiput
SCM - Actions
Unilaterally:
LATERALLY FLEX the head and neck to the SAME side
ROTATE the head and neck to the OPPOSITE side
Bilaterally:
FLEX the neck
Assist to ELEVATE the ribcage during inhalation
Scalenes - Innervation
C3-8
Scalenes - Origin
ANTERIOR:
transverse process of C3-C6
MIDDLE:
transverse process of C2-C7
POSTERIOR:
transverse process of C6-C7
Scalenes - Insertion
ANTERIOR:
1st rib
MIDDLE:
1st rib
POSTERIOR:
2nd rib
Scalenes - Actions
Unilaterally:
LATERALLY FLEX the head and neck to the SAME side (all 3)
ROTATE the head and neck to the OPPOSITE side (all 3)
Bilaterally:
FLEX the head and neck (anterior only)
ELEVATE the ribs during inhalation (all 3)
SIN # to remember for scalenes
136 127 267
Levator Scapulae - Innervation
Cervical and dorsal scapular nerves
levator Scapulae - Origin
transverse process of C1 - C4
Levator Scapulae - Insertion
Medial border of the scapula between the superior angle and the superior portion of the spine of the scapula
Levator Scapula - Actions
Unilaterally:
ELEVATE the scapula
DOWNWARDLY ROTATE the scapula
LATERALLY FLEX the head and neck to the SAME side
ROTATE the head and neck to the SAME side
Bilaterally:
EXTEND the head and neck
Splenius Capitus - Innervation
Cervical nerve
Splenius capitus - Origin
Inferior 1/2 of the ligamentum nuchae
Spinous process of C7 - T4
Splenius Capitus - Insertion
Mastoid process
Lateral portion of the superior nuchal line
Splenius capitus - Actions
Unilaterally:
ROTATE the head and neck to the SAME side
LATERALLY FLEX the head and neck to the SAME side
Bilaterally:
EXTEND the head and neck
Splenius Cervicis - Innervation
Cervical Nerve
Splenius Cervicis - Origin
Spinous processes of T3 - T6
Splenius Cervicis - Insertion
Transverse processes of C1 - C3
Splenius Cervicis - Actions
Unilaterally:
ROTATE the head and neck to the SAME side
LATERALLY FLEX the head and neck to the SAME side
Bilaterally:
EXTEND the head and neck
Pectoralis Minor - Innervation
Medial pectoral nerve, with fibers from a communicating branch of the lateral pectoral nerve
Pectoralis Minor - Origin
Third, fourth, and fifth ribs
Pectoralis Minor - Insertion
Medial surface of the coracoid process of the scapula
Pectoralis Minor - Actions
DEPRESS the scapula (scapulothoracic joint)
ABDUCT/PROTRACT the scapula (scapulothoracic joint)
DOWNWARDLY ROTATE the scapula (scapulothoracic joint)
With the scapula fixed:
Assist to ELEVATE the thorax during forced inhalation
Longus Colli - Innervation
C2-7
Longus Colli - Origin
Bodies of C5 - T3
Transverse processes of C3 - C5
Longus Colli - Insertion
Tubercle on anterior arch of the atlas
Bodies of the axis, C3 - C4
Transverse processes of C5 - C6
Longus Colli - Actions
Unilaterally:
LATERALLY FLEX the head and neck to the SAME side
ROTATE the head and neck to the SAME side
Bilaterally:
FLEX the head and neck
Suboccipitals - Name them
Rectus Capitis Posterior Major
Rectus Capitis Posterior Minor
Oblique Capitis Superior
Oblique Capitis Inferior
Suboccipitals - Innervation
Suboccipital Nerve (all 4)
RCP Major - Origin
Spinous process of the axis (C2)
RCP Minor - Origin
Tubercle of the posterior arch of the atlas (C1)
OCS - Origin
Transverse process of the atlas (C1)
OCI - Origin
Spinous process of the axis (C2)
RCP Major - Insertion
Inferior nuchal line of the occiput
RCP Minor - Insertion
Inferior nuchal line of the occiput
OCS - Insertion
between the nuchal lines of the occiput
OCI - Insertion
Transverse process of the atlas (C1)
Suboccipitals - Actions
RCP Major, RCP MInor, OCS:
ROCK & TILT the head back into extension
RCP Major, OCI:
ROTATE the head to the SAME side
OCS:
LATERALLY FLEX the head to the same side
Which suboccipitals rock and tilt the head back into extension?
RCP Major
RCP Minor
OCS
Which suboccipitals rotate the head and neck to the same side?
RCP Major
OCI
Which suboccipitals laterally flex the head to the same side?
OCS
Pectoralis Major - Actions
ADDUCT glenohumeral
MEDIALLY ROTATE glenohumeral
Assist to elevate thorax during forced inhalation
Upper fibers:
FLEX glenohumeral
HORIZONTALLY ADDUCT glenohumeral
Lower fibers:
EXTEND glenohumeral
Pectoralis Major - Innervation
Upper fibers: lateral pectoral nerve
Lower fibers: Medial and lateral pectoral nerves
Pectoralis Major - Origin
Medial half of clavicle
Sternum
Cartilage of ribs 1-6
Pectoralis major - insertion
Crest of greater tubercle of humerus
OCI - actions
Rotate same side
OCS - actions
Extend head
Laterally flex head
RCP major - actions
Extend
Rotate same side
RCP minor - actions
Rock and tilt the head back into extension
Subclavius - Innervation
subclavian nerve
Subclavius - Origin
1st rib and cartilage
subclavius - insertion
inferior surface of the middle 1/3 of clavicle
subclavius - actions
DEPRESS the clavicle and draw it anteriorly
ELEVATE the 1st rib (to assist during inhalation)
STABILIZE the sternoclavicular joint
Serratus anterior - innervation
long thoracic nerve
serratus anterior - origin
external surfaces of upper 8 or 9 ribs
serratus anterior - insertion
anterior surface of the medial border of the scapula
serratus anterior - actions
with origin fixed:
ABDUCT scapulothoracic
UPWARDLY ROTATE scapulothoracic
DEPRESS scapulothoracic
HOLD the medial border of the scapula against the rib cage
with scapula fixed:
may act to ELEVATE the thorax during forced inhalation
coracobrachialis - innervation
musculocutaneous nerve
coracobrachialis - origin
coracoid process of the scapula
coracobrachialis - insertion
medial surface of the mid-humeral shaft
coracobrachialis - actions
FLEX glenohumeral
ADDUCT glenohumeral
teres major - innervation
lower subscapular nerve (C5-C7)
teres major - origin
inferior angle
lower 1/3 of lateral border of the scapula
teres major - insertion
crest of the lesser tubercle of the humerus
teres major - actions
EXTEND,
ADDUCT,
MEDIALLY ROTATE
glenohumeral joint
infraspinatus - innervation
suprascapular nerve (C4-C6)
infraspinatus - origin
infraspinous fossa of the scapula
infraspinatus - insertion
greater tubercle of the humerus
infraspinatus - actions
LATERALLY ROTATE,
ADDUCT
glenohumeral joint
STABILIZE the head of the humerus in the glenoid cavity
teres minor - innervation
axillary nerve (C5-6)
teres minor - origin
upper 2/3 of lateral border of the scapula
teres minor - insertion
greater tubercle of the humerus
teres minor - actions
LATERALLY ROTATE,
ADDUCT
the glenohumeral joint
STABILIZE head of the humerus in the glenoid cavity
subscapularis - innervation
upper and lower subscapular nerves (C5-7)
subscapularis - origin
subscapular fossa of the scapula
subscapularis - insertion
lesser tubercle of the humerus
subscapularis - actions
MEDIALLY ROTATE glenohumeral
STABILIZE head of humerus in glenoid cavity
supraspinatus - innervation
suprascapular nerve (C4-6)
supraspinatus - origin
supraspinous fossa of the scapula
supraspinatus - insertion
greater tubercle of the humerus
supraspinatus - actions
ABDUCT glenohumeral
STABILIZE head of humerus in glenoid cavity
Brachialis - innervation
musculocutaneous and small branch of radial nerve
brachialis - origin
the distal 1/2 of the anterior surface of the humerus
brachialis - insertion
tuberosity and coronoid process of the ulna
brachialis - actions
FLEX the elbow at the humeroulnar joint
pronator teres - innervation
median nerve
pronator teres - origin
common flexor tendon from medial epicondyle of humerus and coronoid process of the ulna
pronator teres - insertion
middle of the lateral surface of the radius
pronator teres - actions
PRONATE the forearm at the radioulnar joints
assist to FLEX the elbow at the humeroulnar joint
flexor carpi ulnaris - innervation
ulnar nerve
flexor carpi ulnaris - origin
humeral head: common flexor tendon from medial epicondyle of humerus
ulnar head: posterior surface of proximal 2/3 of ulna
flexor carpi ulnaris - insertion
pisiform
hook of hamate
base of 5th metacarpal
flexor carpi ulnaris - actions
FLEX and ADDUCT the wrist at the radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
flexor carpi radialis - innervation
median nerve
flexor carpi radialis - origin
common flexor tendon from medial epicondyle of the humerus
flexor carpi radialis - insertion
bases of the second and third metacarpals
flexor carpi radialis - actions
FLEX and ABDUCT the wrist at radiocarpal joint
may assist to FLEX the elbow at the humeroulnar joint
flexor digitorum superficialis - innervation
median nerve
flexor digitorum superficialis - origin
- common flexor tendon from medial epicondyle of the humerus
- ulnar collateral ligament
- coronoid process of the ulna
- interosseous membrane
- proximal shaft of the radius
flexor digitorum superficialis - insertion
side of the middle phalanges of 2nd-5th fingers
flexor digitorum superficialis - actions
FLEX 2nd-5th fingers
FLEX the wrist at radiocarpal joint
flexor digitorum profundus - innervation
median and ulnar nerves
flexor digitorum profundus - origin
anterior and medial surfaces of proximal 3/4 of ulna
flexor digitorum profundus - insertion
bases of distal phalanges,
palmar surface of 2nd-5th fingers
flexor digitorum profundus - actions
FLEX 2nd-5th fingers at metacarpophalangeal and distal interphalangeal joints
assist to FLEX the wrist at radiocarpal joint
palmaris longus - innervation
median nerve
palmaris longus - origin
common flexor tendon from medial epicondyle of humerus
palmaris longus - insertion
flexor retinaculum
palmar aponeurosis
palmaris longus - actions
TENSE the palmar fascia
FLEX the wrist at radiocarpal joint
may assist to FLEX the elbow at humeroulnar joint
pronator quadratus - innervation
median nerve
pronator quadratus - origin
medial, anterior surface of distal ulna
pronator quadratus - insertion
lateral, anterior surface of distal radius
pronator quadratus - actions
PRONATION of the forearm at radioulnar joints
extensor carpi radialis longus (ECRL2) - innervation
radial nerve
extensor carpi radialis longus (ECRL2) - origin
distal 1/3 of lateral supracondylar ridge of the humerus
extensor carpi radialis longus (ECRL2) - insertion
base of the 2nd metacarpal
extensor carpi radialis longus (ECRL2) - actions
EXTENDS and ABDUCTS the wrist at radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
extensor carpi radialis brevis (ECRB3) - innervation
radial nerve
extensor carpi radialis brevis (ECRB3) - origin
common extensor tendon from the lateral epicondyle of the humerus
extensor carpi radialis brevis (ECRB3) - insertion
base of 3rd metacarpal
extensor carpi radialis brevis (ECRB3) - actions
ABDUCT and EXTEND the wrist at radiocarpal joint
assist to FLEX the elbow at humeroulnar joint
supinator - innervation
radial nerve
supinator - origin
- lateral epicondyle of the humerus
- radial collateral ligament
- annular ligament
- supinator crest of the ulna
supinator - insertion
anterior, lateral surface of proximal 1/3 of radial shaft
supinator - actions
SUPINATES the forearm at the radioulnar joints
ABductor pollicis longus - innervation
radial nerve
ABductor pollicis longus - origin
posterior surface of radius, ulna, and interosseous membrane
ABductor pollicis longus - insertion
base of 1st metacarpal
ABductor pollicis longus - actions
ABDUCTS and EXTENDS the thumb at carpometacarpal jt
ABDUCTS (RADIALLY DEVIATES) the wrist at radiocarpal jt
forms the anterior border of the anatomical snuff box
extensor pollicis longus - innervation
radial nerve
extensor pollicis longus - origin
posterior surface of ulna
interosseous membrane
extensor pollicis longus - insertion
base of distal phalanx of thumb
extensor pollicis longus - actions
EXTEND the thumb (MCP, CMC, and IP joints)
ABDUCT the wrist at radiocarpal joint
extensor pollicis brevis - innervation
radial nerve
extensor pollicis brevis - origin
posterior surface of radius
interosseous membrane
extensor pollicis brevis - insertion
base of proximal phalanx of thumb
extensor pollicis brevis - actions
EXTEND the thumb (MCP and CMC joints)
ABDUCT the wrist at radiocarpal joint
flexor pollicis longus - innervation
median nerve C(6), 7, 8, T1
flexor pollicis longus - origin
anterior surface of the radius
interosseous membrane
flexor pollicis longus - insertion
base of distal phalanx of thumb
flexor pollicis longus - actions
FLEX the thumb (MCP, CMC, IP jts)
assist to FLEX the wrist at radiocarpal joint
Abductor pollicis brevis - innervation
median nerve
Abductor pollicis brevis - origin
flexor retinaculum,
trapezium,
scaphoid tubercles
Abductor pollicis brevis - insertion
base of proximal phalanx of thumb
Abductor pollicis brevis - actions
ABDUCT the thumb (MCP, CMC jts)
assist OPPOSITION of the thumb
flexor pollicis brevis - innervation
superficial head: median nerve
deep head: ulnar nerve
flexor pollicis brevis - origin
superficial head: flexor retinaculum
deep head: trapezium, trapezoid, capitate
flexor pollicis brevis - insertion
base of the proximal phalanx of thumb
flexor pollicis brevis - actions
FLEX the thumb (MCP and CMC joints)
assist in OPPOSITION of the thumb
opponens pollicis - innervation
median nerve C6,7,8,T1
opponens pollicis - origin
flexor retinaculum,
tubercle of trapezium
opponens pollicis - insertion
entire length of 1st metacarpal bone,
radial surface
opponens pollicis - actions
OPPOSITION of thumb (CMC jt) - bringing the pads of thumb and 5th finger together
adductor pollicis (oblique and transverse) - innervation
ulnar nerve C8,T1
adductor pollicis (oblique and transverse) - origin
capitate,
2nd and 3rd metacarpals
adductor pollicis (oblique and transverse) - insertion
base of proximal phalanx of thumb
adductor pollicis (oblique and transverse) - actions
ADDUCT the thumb (MCP, CMC jts)
assist to FLEX the thumb (MCP jt)
adductor digiti minimi - innervation
ulnar nerve C(7),8, T1
adductor digiti minimi - origin
pisiform,
tendon of flexor carpi ulnaris
adductor digiti minimi - insertion
base of proximal phalanx of 5th finger, ulnar surface
adductor digiti minimi - actions
ABDUCT the 5th finger (MCP jt)
assist in OPPOSITION of the 5th finger toward the thumb (MCP jt)
flexor digiti minimi brevis - innervation
ulnar nerve C(7),8,T1
flexor digiti minimi brevis - origin
hook of hamate,
flexor retinaculum
flexor digiti minimi brevis - insertion
base of proximal phalanx of 5th finger, palmar surface
flexor digiti minimi brevis - actions
FLEX the 5th finger (MCP jt)
assist in OPPOSITION of the 5th finger toward the thumb
opponens digiti minimi - innervation
ulnar nerve C(7),8,T1
opponens digiti minimi - origin
hook of hamate,
flexor retinaculum
opponens digiti minimi - insertion
shaft of 5th metacarpal, ulnar surface
opponens digiti minimi - actions
OPPOSITION of 5th finger (CMC jt)
lumbricals of the hand - innervation
2nd and 3rd fingers: median nerve C(6),7,8,T1
4th and 5th fingers: ulnar nerve C(7),8,T1
lumbricals of the hand - origin
surfaces of the flexor digitorum profundus tendons
lumbricals of the hand - insertion
extensor aponeurosis on dorsal surface of phalanges
lumbricals of the hand - actions
EXTEND 2nd - 5th fingers @ IP jts
FLEX 2nd - 5th fingers @ MCP jts
palmar interossei - innervation
ulnar nerve C8,T1
palmar interossei - origin
base of 1st, 2nd, 4th, 5th metacarpals
palmar interossei - insertion
base of proximal phalanx of the related finger,
and the extensor aponeurosis
palmar interossei - actions
ADDUCT the thumb, 2nd, 4th, 5th fingers toward the 3rd finger
assist to FLEX the thumb, 2nd, 4th, 5th fingers (MCP jts)
assist to EXTEND the thumb, 2nd, 4th, 5th fingers (IP jts)
dorsal interossei - innervation
ulnar nerve C8,T1
dorsal interossei - origin
adjacent sides of all metacarpals
dorsal interossei - insertion
base of the proximal phalanx of the 2nd, 3rd, 4th fingers
extensor aponeurosis
dorsal interossei - actions
ABDUCT 2nd, 3rd, 4th fingers (MCP jts)
assist to FLEX 2nd, 3rd, 4th fingers (MCP jts)
assist the EXTEND 2nd, 3rd, 4th fingers (IP jts)
deltoid - innervation
axillary nerve
deltoid - origin
lateral 1/3 of the clavicle
acromion of scapula
spine of scapula
deltoid - insertion
deltoid tuberosity
deltoid - actions
entire deltoid:
ABDUCT GH jt
anterior deltoid:
FLEX, MEDIALLY ROTATE, HORIZONTALLY ADDUCT the GH jt
posterior deltoid:
EXTEND, LATERALLY ROTATE, HORIZONTALLY ABDUCT the GH jt
biceps brachii - innervation
musculocutaneous nerve
biceps brachii - origin
long head:
supraglenoid tubercle of the scapula
short head: coracoid process of the scapula
biceps brachii - insertion
tuberosity of the radius,
aponeurosis of the biceps brachii
biceps brachii - actions
FLEX elbow at humeroulnar jt
SUPINATE forearm at radioulnar joints
FLEX shoulder at glenohumeral jt
triceps brachii - innervation
radial nerve
triceps brachii - origin
long head:
infraglenoid tubercle of the scapula
lateral head:
proximal half of posterior surface of humerus
Medial head:
Distal half of posterior surface of humerus
triceps brachii - insertion
olecranon process of the ulna
triceps brachii - actions
all heads:
EXTEND elbow at humeroulnar jt
long head:
ADDUCT and EXTEND shoulder @ GH jt
brachioradialis - innervation
radial nerve
brachioradialis - origin
proximal 2/3 of the lateral supracondylar ridge of he humerus
brachioradialis - insertion
styloid process of the radius
brachioradialis - actions
FLEX elbow at humeroulnar jt
assist to PRONATE and SUPINATE the forearm when these movements are resisted
Serratus Posterior Superior - Innervation
T1-T4
Serratus Posterior Superior - Origin
Spinous processes of C7-T3
Serratus Posterior Superior - Insertion
posterior surfaces of ribs 2-5
Serratus Posterior Superior - actions
elevate the ribs during inhalation
Serratus Posterior Inferior - Innervation
T9-T12
Serratus Posterior Inferior - Origin
Spinous Processes of T12-L3
Serratus Posterior Inferior - Insertion
posterior surface of ribs 9-12
Serratus Posterior Inferior - actions
depress the ribs during exhalation
External intercostals - innervation
thoracic nerve
external intercostals - origin
inferior border of the rib above
external intercostals - insertion
superior border of the rib below
external intercostals - actions
draw the ribs superiorly (increases the space of the thoracic cavity) to assist with inhalation
internal intercostals - origin
inferior border of the rib above
internal intercostals - innervation
thoracic nerve
internal intercostals - insertion
superior border of the rib below
internal intercostals - actions
draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with exhalation
diaphragm - innervation
phrenic nerve from the cervical plexus: C3, C4, C5 (keeps the diaphragm alive)
diaphragm - origin
inner surfaces of the the lower 6 ribs,
upper 2 or 3 lumbar vertebrae,
inner part of xiphoid process
diaphragm - insertion
central tendon
diaphragm - actions
draw down the central tendon of the diaphragm
increase the volume of the thoracic cavity during inhalation
rectus abdominis - innervation
T5-T12, ventral rami
rectus abdominis - origin
pubic crest
pubic symphysis
rectus abdominis - insertion
cartilage of ribs 5-7
xiphoid process
rectus abdominis - actions
FLEX the vertebral column
TILT pelvis POSTERIORLY
external obliques - innervation
T5-T12
external obliques - origin
external surfaces of ribs 5-12
external obliques - insertion
anterior part of the iliac crest,
rectus sheath to the linea alba
external obliques - actions
LATERALLY FLEX vertebral column to same side
ROTATE vertebral column to the opposite side
FLEX vertebral column
COMPRESS abdominal contents
internal obliques - innervation
T7-L1,
iliohypogastric nerve and the ilioinguinal nerve, ventral divisions
internal obliques - origin
lateral inguinal ligament,
iliac crest,
thoracolumbar fascia
internal obliques - insertion
internal surfaces of the lower 3 ribs,
rectus sheath to the linea alba
internal obliques - actions
FLEX, LATERALLY FLEX, and ROTATE vertebral column to the same side,
COMPRESS the abdominal contents
transverse abdominis - innervation
T7-12, L1, iliohypogastric nerve and the ilioinguinal nerve, ventral divisions
transverse abdominis - origin
lateral inguinal ligament,
iliac crest,
thoracolumbar fascia,
internal surfaces of the lower 6 ribs
transverse abdominis - insertion
rectus sheath to the linea alba
transverse abdominis - actions
COMPRESS abdominal contents
Semispinalis Capitis - innervation
cervical nerve
Semispinalis Capitis - Origin
TVPs of C4-T5
Semispinalis Capitis - Insertion
between the superior and inferior lines of the occiput
Semispinalis Capitis - actions
EXTEND head and vertebral column
Iliacus - Innervation
Femoral nerve
Iliacus - origin
Iliac fossa
Iliacus - insertion
Lesser trochanter
Iliacus - actions
With origin fixed:
FLEX the coxal joint
May LATERALLY FLEX the coxal joint
With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY
Psoas Major - Innervation
Lumbar plexus
Psoas Major - origin
Bodies and transverse processes of lumbar vertebrae
Psoas Major - insertion
Lesser trochanter
Psoas Major - actions
With origin fixed:
FLEX the coxal joint
May LATERALLY ROTATE coxal joint
With insertion fixed:
FLEX the trunk toward the thigh
TILT the pelvis ANTERIORLY
Unilaterally: assist to LATERALLY FLEX the lumbar spine
Piriformis - Innervation
Sacral plexus
Piriformis - origin
Anterior surface of sacrum
Piriformis - insertion
Superior aspect of greater trochanter
Piriformis - actions
LATERALLY ROTATE the coxal joint
ABDUCT the coxal joint when the hip is flexed
Quadratus Femoris - Innervation
Sacral plexus
Quadratus Femoris - origin
Lateral border of Ischial tuberosity
Quadratus Femoris - insertion
Intertrochanteric crest between the greater and lesser trochanters
Quadratus Femoris - actions
LATERALLY ROTATE the coxal joint
Obturator Internus - Innervation
Sacral plexus
Obturator internus - Origin
Obturator membrane & inferior surface of foramen
Obturator internus - insertion
Medial surface of greater trochanter
Obturator internus - actions
LATERALLY ROTATE the coxal joint
Obturator externus - Innervation
Obturator nerve
Obturator externus - origin
Rami of pubis and ischium,
Obturator membrane
Obturator externus - insertion
Trochanteric fossa of femur
Obturator externus - actions
LATERALLY ROTATE the coxal joint
Gemellus Superior - Innervation
Sacral plexus
Gemellus superior - origin
Ischial spine
Gemellus superior - insertion
Medial surface of greater trochanter
Gemellus superior - actions
LATERALLY ROTATE the coxal joint
Gemellus inferior - Innervation
Sacral plexus
Gemellus inferior - origin
Ischial tuberosity
Gemellus inferior - actions
LATERALLY ROTATE the coxal joint
Gemellus inferior - insertion
Medial surface of the greater trochanter
Quadratus Lumborum - innervation
Lumbar plexus (T12-L3)
Quadratus Lumborum - origin
Posterior iliac crest
Quadratus Lumborum - insertion
Last rib,
TVPs of L1-L4
Quadratus Lumborum - Actions
LATERALLY TILT pelvis
LATERALLY FLEX the vertebral column
Assist to EXTEND the vertebral column
FIX the last rib during forced inhalation and exhalation
Gluteus Maximus - Innervation
Inferior gluteal nerve (L5, S1, S2)
Gluteus Maximus - Origin
Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments
Gluteus Maximus - insertion
Upper fibers: Iliotibial tract
Lower fibers: gluteal tuberosity
Gluteus Maximus - Actions
EXTEND
LATERALLY ROTATE
ABDUCT
The coxal joint
Lower fibers: ADDUCT the coxal joint
Gluteus Medius - Innervation
Superior gluteal nerve, L4, L5, and S1
Gluteus Medius - Origin
Gluteal surface of the ilium,
Between posterior and anterior gluteal lines,
Just below iliac crest
Gluteus Medius - Insertion
Lateral aspect of greater trochanter
Gluteus Medius - Actions
Posterior fibers:
ABDUCT, EXTEND, LATERALLY ROTATE the coxal joint
POSTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint
Middle fibers:
ABDUCT the coxal joint
DEPRESS the same side of the pelvis at the hip joint
Anterior fibers:
ABDUCT, FLEX, MEDIALLY ROTATE the coxal joint
ANTERIORLY TILT and DEPRESS the same side of the pelvis at the hip joint
Masseter - innervation
trigeminal nerve (CN V) mandibular division
masseter - origin
Zygomatic arch
masseter - insertion
angle and ramus of mandible
masseter - actions
ELEVATE TMJ
may assist to PROTRACT TMJ
masseter palpation
ask client to clench and relax jaw
temporalis - innervation
trigeminal nerve (CN V) mandibular division
temporalis - origin
temporal fossa & fascia
temporalis - insertion
coronoid process and anterior edge of ramus of the mandible
temporalis - actions
ELEVATE TMJ
RETRACT TMJ
temporalis - palpation
Palpate approx inch above the zygomatic arch and have client clench and relax jaw to locate the insertion site, have client open mouth wide
lateral pterygoid - innervation
trigeminal nerve (CN V)
lateral pterygoid - origin
Superior head:
infratemporal surface and crest of greater wing of sphenoid
Inferior head:
lateral surface of lateral pterygoid plate of sphenoid
lateral pterygoid - insertion
articular disc and capsule of TMJ,
neck of mandible
lateral pterygoid - actions
Unilaterally:
LATERALLY DEVIATE the TMJ to the OPPOSITE side
Bilaterally:
PROTRACT the TMJ
lateral pterygoid - palpation
with gloved hand: position palpating finger inside the mouth between the cheek and teeth along external surface of top teeth to back molars. press posteriorly and superiorly, have client protract or contralaterally DEVIATE the jaw
medial pterygoid - innervation
trigeminal nerve (CN V)
medial pterygoid - origin
medial surface of lateral pterygoid plate of sphenoid,
tuberosity of maxilla
medial pterygoid - insertion
medial surface of ramus of the mandible
medial pterygoid - actions
Unilaterally:
LATERALY DEVIATE the TMJ to the OPPOSITE side
Bilaterally:
ELEVATE the TMJ
PROTRACT the TMJ
medial pterygoid - palpation
curl fingers around inside surface of the mandible, have client clench teeth and relax
inferior attachment can be palpated with gloved finger inside mouth - a long lower teeth to back molars and press posterolaterally
occipitofrontalis - innervation
facial nerve (CN VII)
occipitofrontalis - origin
Both: galea aponeurotica
occipitofrontalis - insertion
frontalis: skin superior to eyebrows
occipitalis: superior nuchal line of occiput
occipitofrontalis - actions
frontalis:
raise the eyebrows
wrinkle the forehead
occipitalis:
anchor and retract the galea posteriorly
occipitofrontalis - palpation
supine: have client raise eyebrows
supine/prone: locate superior nuchal ine and move 1 inch superior
platysma - innervation
facial (CN VII)
platysma - origin
fascia covering superior part of pectoralis major
platysma - insertion
base of mandible,
skin of lower part of face
platysma - actions
assist to DEPRESS the TMJ
TIGHTEN the fascia of the neck
DRAW DOWN corner of the mouth
platysma - palpation
ask client to jutt head anteriorly and protract jaw