Brachial nerve innervations

Question 1

Musculocutaneous sensory

Answer 1

Lateral forearm

Question 2

Musculocutaneous motor

Answer 2

Biceps brachii, brachialis, coracobrachialis

Question 3

Median sensory

Answer 3

Lateral palm of the hand and dorsal tips of fingers

Question 4

Median motor

Answer 4

Flexors of the forearm (excpet FCU and medial 1/2 of FDP), thenar muscles, two lateral lumbricals

Question 5

Ulnar sensory

Answer 5

Ulnar side of the hand

Question 6

Ulnar motor

Answer 6

FCU and and medial 1/2 od FDP, all muscles of the hand except thenar muscles and 2 lateral lumbricals

Question 7

Axillary sensory

Answer 7

Deltoid region

Question 8

Axillary motor

Answer 8

Deltoid, teres minor

Question 9

Radial sensory

Answer 9

Posterior aspect of the arm and forearm and 1st dorsal interosseous web

Question 10

Radial motor

Answer 10

Triceps brachii, extensors of the forearm

Question 11

Musculocutanous palsy

Answer 11

Uncommen, paralysis of BBC

Question 12

Median palsy

Answer 12

Supracondylar fracture = hand of benediction

Carpal tunnel = thenar atrophy

Question 13

Ulnar palsy

Answer 13

Medial epicondyle fracture = claw hand

Question 14

Axillary palsy

Answer 14

Dislocated shoulder, surgical neck fracture = paralysis and atrophy of deltoid

Question 15

Radial palsy

Answer 15

Midshaft fracture = wrist drop and weakened elbow extension