Muscle Anatomy and Innervation

Question 1

Suprascapular nerve innervates what muscles?

Answer 1

infraspinatus

supraspinatus

Question 2

Subscapular nerve innervates what muscles?

Answer 2

subscapularis

teres major

Question 3

Dorsal scapular nerve innervates what muscles?

Answer 3

levator scapulae
rhomboid major
rhomboid minor

Question 4

Axillary nerve innervates what muscles?

Answer 4

deltoid (anterior and posterior fibers)

teres minor

Question 5

What muscles are all innervated by the Radial Nerve?

Answer 5

anconeus
brachioradialis
supinator
triceps (short and long head)
extensor carpi radialis longus
*extensor carpi radialis brevis
*extensor carpi ulnaris
*abductor pollicis longus
*extensor pollicis longus 
          (*posterior interosseus/radial innervates these)

Question 6

What are the actions, innervation, and spinal segments of the latissimus dorsi?

Answer 6

action: EXT, ADD, IR, Scap depression, Protraction
nerve: thoracodorsal
spinal: C6, C7, C8