Examples from practice test (which muscles are innervated by?)

Question 1

dorsal ramus T2 (2)

Answer 1

erector spinae, multifidus

Question 2

ventral root T3 (2)

Answer 2

erector spinae, multifidus

Question 3

ventral ramus T3

Answer 3

none or above but probably deep back muscles

Question 4

posterior cord (at its origin) (3)

Answer 4

subscapularis, deltoid, teres major DOWNSTREAM: axillary and radial nerve

Question 5

lateral cord (at its origin) (3)

Answer 5

pectoralis major, pectoralis minor coracobracialis. DOWNSTREAM: lateral pectoral nerve, musculocutaneous, median

Question 6

suprascapular nerve (at its origin) (2)

Answer 6

supraspinatus, infraspinatus

Question 7

lateral pectoral nerve (at its origin) (2)

Answer 7

pectoralis major, pectoralis minor

Question 8

thoracodorsal nerve (at its origin) (1)

Answer 8

latissimus dorsi

Question 9

musculocutaneous (at its origin) (3)

Answer 9

biceps brachii, brachialis, coracobrachialis

Question 10

radial nerve (at its origin) (3)

Answer 10

brachialis, triceps brachii, brachioradialis. could be any of posterior forearm though (extensors)

Question 11

lower subscapular nerve (at its origin) (2)

Answer 11

teres major, subscapularis

Question 12

long thoracic nerve (at its origin) (1)

Answer 12

serratus anterior

Question 13

median nerve (at its origin) (3)

Answer 13

pronator teres, Flexor digitorum superficialis, pronator quadratus (but could be any anterior flexor forearm muscles (excluding flexor carpi ulnaris, Flexor digitorum profundus)

Question 14

median nerve (as it traverses the two heads of pronator teres) (3)

Answer 14

flexor pollicis longus, pronator quadratus, opponens pollicis (any of the median nerve muscles downstream of pronator teres)

Question 15

Ulnar nerve (at its origin) (3)

Answer 15

flexor carpi ulnaris, flexor digitorum profundus, adductor pollicis (but could be any of the ulnar nerve muscles)

Question 16

ulnar nerve (at the wrist) (3)

Answer 16

opponens digiti minimi, adductor pollicis, flexor pollicis brevis (but could be any of the ulnar nerve hand muscles)

Question 17

recurrent branch of the median nerve (3)

Answer 17

opponens pollicis, flexor pollicis brevis, abductor pollicis brevis

Question 18

inferior gluteal nerve (at its origin)

Answer 18

gluteus maximus

Question 19

femoral nerve (at its origin)

Answer 19

rectus femoris, sartorius, vastus lateralis but could be any of the quadriceps muscles too (also pectineus)

Question 20

obturator nerve (at its origin) (3)

Answer 20

adductor longus, gracislis, obturator externus but could be any of the adductors

Question 21

sciatic nerve (at its origin) (3)

Answer 21

semimembranosis, semitendinosis, adductor magnus (also biceps femoris)

Question 22

common fibular nerve (at its origin) (3)

Answer 22

Tibialis anterior, fiburalis longus (peroneus longus), fibularis brevis (peroneus brevis)

Question 23

lateral plantar nerve (at its origin) (3)

Answer 23

adductor hallucis, dorsal interossei, plantar interossei Lateral side of foot

Question 24

Medial plantar nerve

Answer 24

abductor hallucis, flexor digitorum brevis, flexor digitorum brevis, 1st lumbrical (all on medial/plantar side of foot)