Brachial Plexus

Question 1

dorsal scapular nerve innervates:

Answer 1

levator scapulae, rhomboids

Question 2

suprascapular nerve innervates

Answer 2

suprascapular, infrascapular

Question 3

long thoracic innervates

Answer 3

serratus anterior

Question 4

lateral pectoral nerve innervates

Answer 4

pec major

Question 5

thoracodorsal n innervates

Answer 5

latissimus dorsi

Question 6

lower subscapular innervates

Answer 6

subscapularis, teres major

Question 7

upper subscapular innervates

Answer 7

subscapularis

Question 8

medial pectoralis innervates

Answer 8

pec major and minor

Question 9

musculocutanenous nerve innervates:

cutaneous:

Answer 9

coracobrachilais, biceps brachii, brachialis

lateral cutaneous

Question 10

axillary n innervates

cutaneous

Answer 10

deltoid, teres major,

superior lateral brachial cutaneous

Question 11

radial n innervates and cutaneous

Answer 11

brachioradialis, extensors of hand, anconius, supinator, triceps
posterior and inferiorlateral cutaneous

Question 12

median nerve innervates and cutaneous

Answer 12

all anterior structures, with exceptions: flexor carpal ulnaris and medial flexor digitom pr

Question 13

ulnar nerve innervates

Answer 13

flexor farpal ulcers
ulnar head of FDP
hypotheanr
adductor pollicis
interossei muscles
3rd and 4th lumbricals

Question 14

ulnar nerve cutaneous mechanism

Answer 14

ulnar cutaenous (DAB = dorsal/abduct, PAD = palmar/adduct)

Question 15

ulnar claw hand symptoms

Answer 15

4th and 5th fingers extended at MCB
interphalangeal joints flexed
wasting at 4th and 5th space above fingers