Muscles For Final Palpation Flashcards
Pectoralis Major - Innervation
UPPER FIBRES: Lateral pectoral nerve
LOWER FIBRES: Lateral and medial pectoral nerves
Pectoralis Major - Origin
Medial 1/2 clavicle
Sternum
Cartilage of ribs 1-6
Pectoralis major - Insertion
Crest of greater tubercle of humerus
Pectoralis Major - Actions
ALL FIBRES:
ADDUCT the shoulder at the glenohumeral joint
MEDIALLY ROTATE the shoulder at the glenohumeral joint
Assist to ELEVATE the thorax during forced inhalation (with the arm fixed)
UPPER FIBRES:
FLEX the shoulder at the glenohumeral joint
HORIZONTALLY ADDUCT the shoulder at the glenohumeral joint
LOWER FIBRES:
EXTEND the shoulder at the glenohumeral joint
Quadratus Lumborum - Innervation
Lumbar plexus T12, L1, 2, 3
Quadratus Lumborum - Origin
Posterior iliac crest
Quadratus Lumborum - Insertion
Last rib
Transverse processes of L1-4
Quadratus Lumborum - Actions
UNILATERALLY:
LATERALLY TILT (ELEVATE) the pelvis
LATERALLY FLEX the vertebral column to the SAME SIDE
BILATERALLY:
Assist to EXTEND the vertebral column
FIX the last rib during forced inhalation and exhalation
TILT the pelvis anteriorly
Tibialis Anterior - innervation
Deep fibular nerve, L4, L5, S1
Gastrocnemius - innervation
Tibial nerve, S1, S2
gastrocnemius - actions
PLANTAR FLEX the ankle at the talocrural joint
FLEX the knee at the tibiofemoral joint
gastrocnemius - origin
condyles of the femur (posterior surface)
gastrocnemius - insertion
calcaneus via calcaneal tendon
tibialis anterior - actions
DORSIFLEX the ankle at the talocrural joint
INVERT the foot at the subtalar joint
tibialis anterior - origin
lateral condyle of the tibia
proximal lateral surface of the tibia
interosseous membrane
tibialis anterior - insertion
medial cuneiform
base of the 1st metatarsal
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
Semitendinosus - Innervation
Sciatic nerve ( tibial branch )
Rectus Femoris - Origin
Anterior inferior iliac spine (AIIS)
Rectus Femoris - Insertion
Tibial tuberosity via the patella and patellar ligament
Rectus Femoris - Actions
EXTEND the knee at the tibiofemoral joint
FLEX the hip at the coxal joint
Rectus Femoris - Innervation
Femoral nerve
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 knee at the tibiofemoral joint
LATERALLY ROTATE the flexed tibiofemoral joint
Long Head:
EXTEND the hip at the coxal joint
assist to LATERALLY ROTATE the coxal joint
Bilaterally:
TILT the pelvis posteriorly
Gluteus Maximus - Innervation
Inferior Gluteal Nerve
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
All fibres:
EXTEND the coxal joint
LATERALLY ROTATE the coxal joint
ABDUCT the coxal joint
Lower fibres:
ADDUCT the coxal joint
Gluteus Medius - Innervation
Superior Gluteal Nerve
Gluteus Medius - Origin
Gluteal surface of ilium
Between posterior and anterior gluteal lines
just below the iliac crest
Gluteus Medius - Insertion
Lateral aspect of the greater trochanter
Gluteus Medius - Actions
All:
ABDUCT the coxal joint
Anterior fibres:
FLEX & MEDIALLY ROTATE the coxal joint
Posterior fibres:
EXTEND & LATERALLY ROTATE the coxal joint
Supraspinatus - Innervation
Suprascapular nerve
Supraspinatus - origin
Supraspinous fossa of the scapula
Supraspinatus - Insertion
Greater tubercle of the humerus
Supraspinatus - Actions
ABDUCT the shoulder at the glenohumeral joint
STABILIZE the head of the humerus in the glenoid cavity
Infraspinatus - Innervation
Suprascapular nerve
Infraspinatus - origin
Infraspinous fossa of the scapula
Infraspinatus - insertion
Greater tubercle of the humerus
Infraspinatus - actions
LATERALLY ROTATE the shoulder at the glenohumeral joint
ADDUCT the shoulder at the glenohumeral joint
STABILIZE the head of the humerus in the glenoid cavity
Deltoid - Innervation
Axillary nerve
Deltoid - origin
Lateral 1/3 of the clavicle
Acromion process
Spine of the scapula
Deltoid - insertion
Deltoid tuberosity
Deltoid - actions
ALL:
ABDUCT the glenohumeral joint
ANTERIOR FIBRES:
FLEX the glenohumeral joint
MEDIALLY ROTATE the glenohumeral joint
HORIZONTALLY ADDUCT the glenohumeral joint
POSTERIOR FIBRES:
EXTEND the glenohumeral joint
LATERALLY ROTATE the glenohumeral joint
HORIZONTALLY ABDUCT the glenohumeral joint
Biceps brachii - Innervation
Musculocutaneous nerve
Biceps brachii - origin
SHORT HEAD:
Coracoid process of the scapula
LONG HEAD:
Supraglenoid tubercle of the scapula
Biceps brachii - actions
FLEX the humeroulnar joint (elbow)
SUPINATE the radioulnar joint (forearm)
FLEX the glenohumeral joint (shoulder)
Triceps brachii - Innervation
Radial nerve
Triceps brachii - origin
LONG HEAD:
Infraglenoid tubercle of the scapula
LATERAL HEAD:
Posterior surface of proximal 1/2 of humerus
MEDIAL HEAD:
Posterior surface of distal 1/2 humerus
Triceps brachii - insertion
Olecranon process of the ulna
Triceps brachii - actions
ALL:
EXTEND the humeroulnar joint
LONG HEAD:
EXTEND the glenohumeral joint
ADDUCT the glenohumeral joint
Brachioradialis - Innervation
Radial nerve
Brachioradialis - origin
Proximal 2/3 of the lateral supracondylar ridge of the humerus
Brachioradialis - insertion
Styloid process of the radius
Brachioradialis - actions
FLEX the humeroulnar joint
Assist to PRONATE and SUPINATE the humeroradial joints when these movements are resisted
Biceps Brachii - Insertion
Tuberosity of the radius
Aponeurosis of the biceps brachii
Sternocleidomastoid - Innervation
Spinal accessory nerve (CN XI), C2, 3
Sternocleidomastoid - Origin
Sternal head: top of the manubrium
Clavicular head: medial 1/3 of the clavicle
Sternocleidomastoid - Insertion
Mastoid process of the temporal bone
Lateral portion of the superior nuchal line of the occiput
Sternocleidomastoid - 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
Levator Scapulae - Innervation
Cervical and dorsal scapular nerves
Levator scapulae - origin
Transverse processes of C1 to C4
Levator scapula - insertion
Medial border of the scapula between the superior angle and the superior portion of the spine of the scapula
Levator Scapulae - Actions
Unilaterally:
ELEVATE the scapulothoracic joint
DOWNWARDLY ROTATE the scapulothoracic joint
LATERALLY FLEX the head and neck to same side
ROTATE the head and neck to same side
Bilaterally:
EXTEND the head and neck