Quiz 6 (Posterior muscles) Flashcards
splenius capitis: N
cervical spinal nerve
Erector spinae: A
Prime mover of back extension
Trapezius: O
occipital bone, ligamentum nuchae, and spinous process of C7-T12
Trapezius: I
Spine and acromion of scapula, lateral 1/3 of clavicle
Trapezius: A
stabilizes, elevates, retracts, depresses and/or rotates scapula
Trapezius: N
accessory never (CN XI) spinal nerves C3-C4
Levator scapulae: O
transverse processes of C1-C4
Levator scapulae: I
superior vertebral border of scapula
Levator scapulae: N
spinal nerves C3-C5
Rhomboideus major: O
Spinous process of T2-T5
Rhomboideus major: I
Medial boarder of scapula from spine to inferior angle
Rhomboideus major: A
Adducts scapula and performs downward rotation of scapula
Rhomboideus major: N
Spinal nerve C5 (via dorsal scapular nerve)
Rhomboideus minor: O
Spinous process of C7-T1
Rhomboideus minor: I
Medial border of scapula, superior to rhomboideus major
Rhomboideus minor: A
adducts scapula and performs downwards rotation of scapula
Rhomboideus minor: N
Spinal nerve C5 (via dorsal scapular nerve)
Teres major: O
inferior angle of scapula
Teres major: I
intertubercular groove of humerus
Teres major: A
extension, medial rotation, and adduction of arm
Teres major: N
subscapular nerve
Latissimus dorsi: O
Spines of T7-L5
ribs 8-12
iliac crest
thoracolumbar fascia
Latissimus dorsi: I
intertubercular groove of humerus
Latissimus dorsi: A
prime arm extensor: adduction and medial rotation at the shoulder: depresses shoulder
Latissimus dorsi: N
Thoracodorsal nerve (C6-C8)
Muscles of the rotator cuff
supraspinatus
infraspinatus
subscapularis
teres minor
Supraspinatus: O
Supraspinous fossa of scapula
Supraspinatus: I
greater tubercle of humerus
Supraspinatus: A
stabilizes shoulder joint: abducts arm
Supraspinatus: N
Suprascapular nerve
Infraspinatus: O
infraspinous fossa of scapula
Infraspinatus: I
greater tubercle of humerus
Infraspinatus: A
stabilizes shoulder joint, laterally rotates arm
Infraspinatus: N
suprascapular nerve
Subscapularis: O
subscapular fossa of scapula
Subscapularis: I
lesser tubercle of humerus
Subscapularis: A
prime medial rotator of arm, stabilizes shoulder joint
Subscapularis: N
subscapular nerve
Teres minor: O
Lateral scapular border
Teres minor: I
greater tubercle of humerus
Teres minor: A
stabilizes shoulder joint, laterally rotates arm
Teres minor: N
axillary nerve
Triceps brachii: O (all three heads)
Long head: infraglenoid tubercle of scapula
Lateral head: proximal end of lateral humeral margin
Medial head: distal to radial groove on posterior humeral shaft
Triceps brachii: I
olecranon process of ulna
Triceps brachii: A
prime extensor of forearm: extends arm
Triceps brachii: N
radial nerve
Anconeus: O
lateral epicondyle of humerus
Anconeus: I
lateral aspect of olecranon process of ulna
Anconeus: A
abduction of ulna during forearm pronation, forearm extensor
Anconeus: N
radial nerve
Flexor carpi radialis: N
median nerve
palmaris longus: N
Median nerve
How many people have unilateral absence of the palmaris longus
15%
how many people have bilateral absence of the palmaris longus
9%
flexor carpi ulnaris: N
ulnar nerve
flexor pullicis longus: N
median nerve
flexor digitorum superficialis: N
median nerve
flexor digitorum profundus: N
Medial half-ulnar nerve
lateral half-median nerve
flexor wrist band
flexor retinaculum
Gluteus maximus: O
dorsal ilium, sacrum coccyx, and lumbodorsal fasica
Gluteus maximus: I
gluteal tuberosity of femur and iliotibial tract
Gluteus maximus:A
Major thigh extensor
lateral rotation of thigh
Gluteus maximus: N
Inferior gluteal nerve
Gluteus medius: O
Anterior iliac crest of ilium between posterior and anterior gluteal lines
Gluteus medius: I
greater trochanter of femur
Gluteus medius: A
abduction and medial rotaion of thigh
steadies pelvis
Gluteus medius: N
superior gluteal nerve
Gluteus minimus: O
lateral surface of ilium between inferior and anterior gluteal lines
Gluteus minimus: I
greater trochanter of the femur
Gluteus minimus: A
abduction and medial rotation of thigh
steadies pelvis
Gluteus minimus: N
Superior gluteal nerve
Note the emergence of the sciatic nerve
between the piriformis and superior gemellus
Piriformis: O
anterolateral surface of sacrum
Piriformis: I
greater trochanter of femur
Piriformis: A
Abduction (when thigh flexed) and lateral rotation of thigh
Piriformis: N
Spinal nerves L5-S2
Superior gemellus: O
ischial spine
Superior gemellus: I
medial surface of greater trochanter of the femur
Superior gemellus: A
lateral rotation of thigh
abduction (when thigh flexed)
Superior gemellus: N
Spinal nerves L5-S1
Obturator internus: O
obturator membrane, and obturator foramen
Obturator internus: I
greater trochanter of femur
Obturator internus: A
lateral rotation of thigh
Obturator internus: N
Spinal nerves L5-S1
Inferior gemellus: O
ischial tuberosity
Inferior gemellus: I
medial surface of greater trochanter of femur
Inferior gemellus: A
lateral rotation of thigh
abduction of thigh (when flexed)
Quadratus femoris: O
ischial tuberosity
Quadratus femoris: I
intertrochanteric crest of femur
Quadratus femoris: A
lateral rotation of thigh
Quadratus femoris: N
Spinal nerves L5-S1
Muscles of the hamstrings
biceps femoris X 2
semitendenosus
semimembranosus
Biceps femoris: O (both heads)
Long head: ischial tuberosity
Short head: linea aspera and distal femur
Biceps femoris: I
head of fibula and lateral condyle of tibia
Biceps femoris: A
Extension of thigh
flexion and lateral rotation of leg
Biceps femoris: N
Sciatic nerve
Semitendinosus: O
ischial tuberosity
Semitendinosus: I
medial aspect of proximal tibial shaft
Semitendinosus: A
extension of thigh
flexion and medial rotation of leg
Semitendinosus: N
sciatic nerve
Semimembranosus: O
ischial tuberosity
Semimembranosus: I
medial condyle of the tibia
Semimembranosus: A
extension of thigh
flexion and medial rotation of leg
Semimembranosus: N
Sciatic nerve
Muscles of the triceps surae
grastrocnemius (both heads)
soleus
Grastrocnemius: N (both heads)
Lateral head: Tibial nerve
Medial head: Tibial nerve
Soleus: N
Tibial nerve
Plantaris: N
Tibial nerve
Popliteus: N
Tibial nerve
Flexor digitorum longus: N
Tibial nerve
Tibialis posterior: N
Tibial nerve
Flexor hallucis longus: N
Tibial nerve
dense fascia on posterior aspect of ankle
flexor retinaculum
Calcaneal tendon
Large tendon on the back of the heel
Rotator cuff (3)
circle of tendons around glenohumeral joint
purpose to strengthen glenohumeral joint (support)
composed of 4 different muscles
Thickest nerve in the body
sciatic nerve
Two nerves that make up the sciatic nerve
tibial nerve
common peroneal nerve