Lecture 9

Front 1

brachial plexus

Back 1

consists of nerve fibers which converge from different spinal cord levels, unite in new combinations then diverge again

Front 2

dorsal scapular nerve (direct branch of the ventral rami)

Back 2

C5; to rhomboid muscles

Front 3

long thoracic nerve (direct branch of ventral rami)

Back 3

C5-7; to serratus anterior muscle

Front 4

suprascapular nerve (direct branch from the trunk)

Back 4

C5-6; to supraspinatus and infraspinatus muscles

Front 5

Anterior division

Back 5

fibers that form the lateral and medial cords

Front 6

posterior division

Back 6

fibers that form the posterior cord

Front 7

lateral cord

Back 7

formed by anterior divisions of the upper and middle trunks C5-C7

Front 8

lateral pectoral nerve

Back 8

C5-7, supply to the clavicular head of the pectoralis major muscle

Front 9

posterior cord

Back 9

carries posterior fibers from all three trunks C5-T1

Front 10

upper subscapular nerve

Back 10

C5; subscapularis muscle

Front 11

thoracodorsal nerve

Back 11

C6-7; to the latissimus dorsi muscle

Front 12

lower subscapular nerve

Back 12

C6; to the subscapularis and teres major muscles

Front 13

medial cord

Back 13

carries anterior fibers only from the lower trunk C8-T1

Front 14

medial pectoral nerve

Back 14

C8-T1; sternal head of the pectoralis mahor and the pectoralis minor muscles

Front 15

medial antebrachial cuaneous nerve

Back 15

C8-T1

Front 16

meidal cutaneous nerve of the brachium

Back 16

T1

Front 17

medial root of the median nerve

Back 17

C8-T1

Front 18

musculocutaneous nerve

Back 18

from the lateral cord, C5-7; to the biceps brachii, supplies muscles and skin

Front 19

median nerve

Back 19

from the medial and lateral cords, C5-T1; to the skin of the palmar surface of radial half of hand

Front 20

ulnar nerve

Back 20

from the medial cord C8-T1; to the skin of the palmar and dorsal surfaces of ulnar half of hand

Front 21

axillary nerve

Back 21

from the posterior cord; C5-C6; to the deltoid and teres minor muscles

Front 22

radial nerve

Back 22

from the posterior cord C5-T1; to the extensor muscles of the arm, forarm, and hand and the brachioradialis muscle, to the skin on the back of the arm, forearm and hand