Nerves of the Upper Limb

Question 1

The first branch off of the brachial plexus, exits at C5 anterior rami before the plexus starts (C4 anterior rami may also be involved) and innervates the rhomboids and levator scapulae

Answer 1

Dorsal scapular nerve

Question 2

Branches off of the superior trunk of brachial plexus, C4-C6, and innervates supraspinatus and infraspinatus

Answer 2

Suprascapular nerve

Question 3

Branch off of the superior trunk of brachial plexus, C5-C6, innervates subclavius

Answer 3

Subclavian nerve

Question 4

Derived from individual branches of C5-C7, innervates serratus anterior

Answer 4

Long thoracic nerve

Question 5

Derived from the lateral root of the median nerve, C5-C7, this innervates both heads of the pectoralis major

Answer 5

Lateral pectoral nerve

Question 6

The terminal branch off of the lateral cord, C5-C7, that innervates coracobrachialis, brachialis, biceps

Answer 6

Musculocutaneous

Question 7

Continues off of the musculocutaneous to receive cutaneous sensory of lateral forearm

Answer 7

Lateral cutaneous nerve of forearm

Question 8

Derived from the medial root of the median nerve, C8-T1, this innervates the pectoralis minor and the sternocostal head of the pectoralis major

Answer 8

Medial pectoral nerve

Question 9

This branches off of the medial cord, C8-T2, is medial to the axillary nerve and receives cutaneous sensory from the skin of the medial arm

Answer 9

Medial cutaneous nerve of the arm

Question 10

This is also a branch off of the medial cord, C8-T1, is superficial to the muscles of the anterior arm and receives cutaneous sensory from the skin of the medial forearm-it also travels with the basilic vein

Answer 10

Medial cutaneous nerve of the forearm

Question 11

This is the terminal branch off of the medial cord, C7-T1, it travels with its same named a. and v., and it travels superficial to the flexor retinaculum to to enter medial hand

Answer 11

Ulnar nerve

Question 12

This is the terminal branch created by the joining of the medial and lateral roots of the brachial plexus

Answer 12

Median nerve

Question 13

This receives cutaneous sensory from skin of the medial palm of hand, medial dorsum of hand, digit 5 and medial surface of digit 4, as well as flexor carpi ulnaris, flexor digitorum profundus-medial 1/2, flexor pollicis brevis, palmar and dorsal interossei, adductor pollicis, all hypothenars, and lumbricals 3&4

Answer 13

Ulnar nerve

Question 14

This receives cutaneous sensory from skin of lateral palm of hand, digits 1-3, and lateral surface of digit 4, and innervates all flexors of the anterior forearm (EXCEPT FCU, medial FDP, lumbricals 3&4, and all thenar muscles)

Answer 14

Median nerve

Question 15

This nerve is present on the thenar eminence, and innervates the 3 pollicis muscles

Answer 15

Recurrent branch of Median nerve

Question 16

The posterior cord gives rise to which 5 nerves?

Answer 16

Axillary, Radial, Upper subscapular, Thoracodorsal, Lower subscapular

Question 17

This nerve is the lateral terminal branch off of the posterior cord, C5-C6, innervates the teres minor and deltoid muscles, and receives cutaneous sensory from the skin of the superolateral arm

Answer 17

Axillary nerve

Question 18

This nerve is the medial terminal branch off of the posterior cord, (C5-T1), innervates the 3 heads of the triceps, anconeus, and brachialis

Answer 18

Radial nerve (in arm)

Question 19

This nerve receives cutaneous sensory from the skin of the posterior arm, posterior forearm, and lateral dorsum of the hand, and innervates the muscles of the posterior arm and forearm (extensors)

Answer 19

Radial nerve

Question 20

This nerve branches off of the posterior cord, C5, and innervates the subscapularis

Answer 20

Upper subscapular nerve

Question 21

This nerve branches off of the posterior cord between the subscapular nerves, C6-C8, and innervates the latissimus dorsi

Answer 21

Thoracodorsal nerve

Question 22

This nerve branches off of the posterior cord, C6, and innervates the subscapularis and teres major

Answer 22

Lower subscapular nerve