Nerves of Brachial Plexus: origin and muscles

Question 1

Dorsal Scapular Nerve origin and muscles

Answer 1

from rami of plexus

Muscles: rhomboids, levator scapulae

Question 2

Long thoracic N origin and muscles

Answer 2

from rami of plexus

Muscles: Serratus ant

Question 3

N to subclavius origin and muscles

Answer 3

from trunks of plexus

subclavius

Question 4

suprascapular N origin and muscles

Answer 4

from trunks of plexus

Infraspinatus, supraspinatus

Question 5

Lateral pectoral N origin and Muscles

Answer 5

from lateral cord

Pec major- clavicular head

Question 6

Musculocutaneous N origin and ms

Answer 6

lateral cord

coracobrachialis, biceps brachii, brachialis

Question 7

Lateral root of median origin and ms

Answer 7

from lateral cord

FL ms in FA, except FCU and 5 ms in hand

Question 8

Medial Pectoral N origin and ms

Answer 8

medial cord

Pec major and minor

Question 9

Ulnar N origin and ms

Answer 9

medial cord

FCU, FDP, most small ms of hand

Question 10

Medial root of median N origin and ms

Answer 10

medial cord

FL ms in FA, except FCU and 5 ms of hand

Question 11

Upper subscapular N origin and Ms

Answer 11

posterior cord

subscapularis

Question 12

Thoracodorsal N origin and Ms

Answer 12

posterior cord

Latissimus dorsi

Question 13

Lower subscapular N origin and ms

Answer 13

posterior cord

Subscap, Teres major

Question 14

Axillary N origin and ms

Answer 14

posterior cord

delt, teres minor

Question 15

Radial N origin and ms

Answer 15

Brachioradialis, triceps, supinator, wrist ext, anconeus