Brachial plexus CHART

Question 1

what innervates the subclavis?

Answer 1

“nerve to subclavis” , C4-C6

Question 2

what does the dorsal scapular nerve innervate?

Answer 2

(C5) the rhomboids and the levator scapulae muscles

Question 3

What does the long thoracic nerve innervate?

Answer 3

(c5-C7) The serratus anterior muscle

Question 4

what does the suprascapular nerve innervate?

Answer 4

supraspinatus and infraspinatus

-sensory from shoulder joint and scapula

Question 5

what innervates the pectoralis muscles?

Answer 5

pectoral nerves (medial and lateral)

Question 6

what doe sthe subscapular nerves innervate?

Answer 6

subscapularis and teres major mjuscles

Question 7

what does the thoracodorsal nerve innervate?

Answer 7

the latissmus dorsi muscle

Question 8

what does the axillary nerve innervate? Motor and sensory?

Answer 8

Motor = deltoid and teres minor muscles

sensory: skin of shoulder

Question 9

what does the medial antebrachial cutaneous nerve innervate ?

Answer 9

sensory skin over anterior, medial surface of arm and forearm

Question 10

what does the radial nerve innervate (motor and sensory)

Answer 10

motor - all muscles in the posterior compartment of the arm and forearm
sensory - skin on the posterior surface of the forearm and the dorsolateral surface of the hand – lateral edge of thumb, back of hand from thumb to middle of the 4th finger but not including finger tips
(btw supinator is on posterior side so it counts here)

Question 11

what does the musculocutaneous nerve innervate (motor and sensory)

Answer 11

motor - all muscles in the anterior compartment of the upper arm (aka all flexors of upper arm)
sensory - skin on the anterolateral side of the forearm

Question 12

what does the median nerve innervate (motor and sensory)

Answer 12

flexor muscles of the forearm EXCEPT FOR flexor carpi ulnaris, and part of the flexor digitorum profundus- radial half. also thenar muscles and two lateral lumbricals

sensory - skin over anterolateral surface of the skin - includes anterolateral palm , from thumb to half of the 4th finger and the fingertips on other side too

Question 13

what does the ulnar nerve innervate (motor and sensory)

Answer 13

motor - flexor carpi ulnaris muscle, ulnar half of flexor digitorum profundus, most intrinsic muscles of the hand , EXCEPT for the thenar muscles and two lateral lumbrical muscles , which are innervated by the median nerve

sensory - skin of medial part of hand, both posterior and anterior