nerves

Question 1

what are the four branches of the median nerve?

Answer 1

anterior interosseous branch
palmar cutaneous branch
lateral (recurrent) branch
medial branch

Question 2

where does the anterior interosseous branch of the median nerve go?

Answer 2

descends down the forearm on the anterior surface of the interosseous membrane between FPL and FDP. It runs deep to pronator quadratus and ends at the wrist

Question 3

whats the motor supply of the anterior interosseous branch of the median nerve?

Answer 3

FPL
FDP (lateral 1/2)
pronator quadratus

Question 4

whats the sensory supply of the anterior interosseous branch of the median nerve?

Answer 4

articular branches to the radiocarpal and interarpal joints

Question 5

where does the palmar cutaneous branch of the median nerve go?

Answer 5

superficially down the forearm and passes over the flexor retinaculum to enter the palm

Question 6

whats the sensory supply of the palmar cutaneous branch of the median nerve?

Answer 6

skin on lateral side of palm and thenar eminance

Question 7

where does the lateral recurrent branch of the median nerve go?

Answer 7

passes laterally and proximally to supply mainly the muscles of the thenar eminance

Question 8

whats the motor supply of the lateral recurrent branch of the median nerve?

Answer 8

abductor pollicis brevis
FPB
opponens brevis
1st lumbrical

Question 9

whats the sensory supply of the lateral recurrent branch of the median nerve?

Answer 9

skin on adjacent sides of the thumb and index finger

Question 10

where does the medial branch of the median nerve run?

Answer 10

divides into several palmar digital nerves. they pass through the palm, deep to the palmar aponeurosis but superficial to the long flexor tendons

Question 11

whats the motor supply of the medial branch of the median nerve?

Answer 11

2nd lumbrical

Question 12

whats the sensory supply of the medial branch of the median nerve?

Answer 12

palmar surface of lateral 3 1/2 digits
dorsal aspect of distal phalanges of 3 1/2 digits
articular branches to MCP and IP joints

Question 13

what does the posterior cutaneous branch of the radial nerve (arm) supply?

Answer 13

skin on the proximal third of the arm posteriorly

Question 14

what does the lateral cutaneous branch of the radial nerve supply?

Answer 14

skin on the lower lateral part of the arm and small area on forearm

Question 15

what does the posterior cutaneous branch of the radial nerve (forearm) supply?

Answer 15

skin on dorsum of forearm as far as the wrist

Question 16

what does the deep posterior interosseous branch of the radial nerve supply (motor)?

Answer 16

supinator, ECRB, ED, EDM, ECU, EPL, EI, APL, EPB

Question 17

what does the deep posterior interosseous branch of the radial nerve supply (sensory)?

Answer 17

articular branches to the intercarpal joints

Question 18

what does the superficial branch of the radial nerve supply (motor)?

Answer 18

none

Question 19

what does the superficial branch of the radial nerve supply (sensory)?

Answer 19

skin on the dorsolateral aspect of the wrist and hand
dorsum of the lateral 3 1/2 digits as far as the distal IP joints
articular branches to MCP and PIP joints

Question 20

where does the superficial branch of the ulnar nerve run?

Answer 20

lies deep to palmaris brevis on the medial side of the hand

Question 21

motor supply of superficial branch of ulnar nerve

Answer 21

palmaris brevis

Question 22

sensory supply of superficial branch of ulnar nerve

Answer 22

skin on medial third of the palm, palmar surface of the medial 1 1/2 digits, dorsal aspect of the distal phalanges of the medial 1 1/2 digits

Question 23

path of deep branch of ulnar nerve

Answer 23

follows the path of the deep palmar arch (deep branch of ulnar artery) to cross the lateral side of the palm

Question 24

motor supply of deep branch ulnar nerve

Answer 24

FDM, abductor digiti minimi, opponens digiti minimi, dorsal interossei, palmar interossei, adductor pollicis, medial 2 lumbricals

Question 25

sensory supply of deep branch ulnar nerve

Answer 25

articular branches to the wrist joint

Question 26

path of dorsal branch of the ulnar nerve

Answer 26

arises from the ulnar nerve in the distal 1/3 of the forearm passes backwards deep to FCU to become superficial on the medial side of the wrist gives off branches to the dorsal surface of the wrist and hand

Question 27

motor supply of the dorsal branch of ulnar nerve

Answer 27

none

Question 28

sensory supply of dorsal branch of ulnar nerve

Answer 28

skin on the dorsal surface of the medial side of the hand and the dorsal surfaces of the medial 1 1/2 digits (excluding distal phalanx)

Question 29

path of palmar cutaneous branch of ulnar nerve

Answer 29

arises from the ulnar nerve in the distal 1/3 of the forearm descends through forearm superficially and passes over flexor retinaculum

Question 30

sensory supply of palmar cutaneous branch

Answer 30

skin on medial side of palm

Question 31

dorsal scapular nerve - where does it come from, what roots, what muscles

Answer 31

roots, C5, Rhomboid major, rhomboid minor, levator scapula

Question 33

nerve to subclavius - roots, where from, muscles

Answer 33

upper trunks, C4,5,6, subclavius

Question 34

suprascapular nerve - roots, where from, muscles

Answer 34

upper trunk, C4,5,6, supraspinatus, infraspinatus

Question 35

medial pectoral nerve - roots, where from, muscles

Answer 35

medial cord, C8,T1, pec minor, pec major

Question 36

upper subscapular nerve - roots, where from, muscles

Answer 36

posterior cord, C4,5,6,7, subscapularis

Question 37

lower subscapular nerve - roots, where from, muscles

Answer 37

posterior cord, C5,6, subscapularis, teres major

Question 38

thoracodorsal nerve - roots, where from, muscles

Answer 38

posterior cord, C5,6,7, latissimus dorsi

Question 39

lateral pectoral nerve - roots, where from, muscles

Answer 39

lateral cord, C5,6,7, pec pajor