Unit Two Antebrachial Nerves

Question 1

What branches off of the brachial plexus provide sensory innervation to the forearm

Answer 1

Medial antebrachial cutaneous, lateral cutaneous, posterior cutaneous

Question 2

The medial antebrachial cutaneous nerves is from what cord of brachial plexus

Answer 2

Medial cord

Question 3

The medial antebrachial fascia pierces what fascia with the basilic vein to run subcutaneously on the medial forearm to wrist

Answer 3

Brachial fascia

Question 4

The lateral cutaneous nerve is an extension of what branch of brachial plexus

Answer 4

Distal extension of musculocutaneous branch

Question 5

Lateral cutaneous nerves is where compared to biceps on the brachioradialis

Answer 5

Lateral

Question 6

Lateral cutaneous runs with what vein

Answer 6

Cephalic

Question 7

Lateral cutaneous nerve descends on what part of the forearm to wrist

Answer 7

Lateral

Question 8

Posterior cutaneous nerve is a branch off of what in the brachial plexus

Answer 8

Radial nerve

Question 9

Posterior cutaneous runs through what to perforate the lateral head of what muscle

Answer 9

Radial canal, tricep

Question 10

The posterior cutaneous nerve runs where on the forearm and wrist

Answer 10

Lateral side

Question 11

What are the nerves of the forearm

Answer 11

Musculocutaneous, radial (deep and superficial), median, recurrent motor to thenar, palmar digital, superficial branch of ulnar, median, ulnar and radial nerve

Question 12

Median nerve comes from what nerve roots

Answer 12

C6, 7, 8, and T1

Question 13

When the median nerve is in the cubital fossa, where is it compared to brachial artery

Answer 13

Medial

Question 14

The median nerve exits between what muscles in the cubital fossa

Answer 14

Pronator teres

Question 15

What are the branches of the median nerve

Answer 15

Anterior interosseous, median and Palmar cutaneous

Question 16

Anterior interosseous nerve supplies what

Answer 16

Flexor pollicis longus, 1/2 flexor digitorum profundus (digits 2 and 3) and pronator quadratus

Question 17

The median nerve supplies what in the forearm

Answer 17

Pronator teres, flexor digitorum superficialis, flexor carpi radialis and Palmaris longus

Question 18

The median nerve innervates what muscles in the forearm

Answer 18

Pronator teres, flexor carpi radialis, palmaris longus and flexor digitorum superficialis

Question 19

What muscles in the forearm are innervated by the anterior interosseous nerve

Answer 19

Flexor digitorum profundus (digit 2,3), flexor pollicis longus and pronator quadratus

Question 20

The median nerve innervates what muscles in the hand

Answer 20

Thenar muscles (recurrent branch) and 1 and 2 lumbricals

Question 21

Ulnar nerve comes from what roots

Answer 21

C8 and T1

Question 22

What are the branches of the ulnar nerve

Answer 22

Dorsal cutaneous, palmar cutaneous and sometimes had communicating branches between ulnar and median nerves

Question 23

Ulnar nerve innervates what muscles in the forearm

Answer 23

Flexor carpi ulnaris, flexor digitorum profundus (digit 3 and 4)

Question 24

Ulnar innervates what muscles in the palm

Answer 24

Hypothenar, adductor pollicis, and flexor pollicis brevis

Question 25

Ulnar nerve innervates what muscles in the fingers

Answer 25

Palmar interosseous, dorsal interosseous, and 3 and 4 lumbricals

Question 26

Ulnar nerve innervates what muscles of the digiti minimi

Answer 26

Abductor digiti minimi, opponens digiti minimi, flexor digiti minimi

Question 27

What are the branches of the radial nerve

Answer 27

Superficial branch (sensory) and deep branch/ posterior interosseous nerve

Question 28

Roots of radial nerve

Answer 28

C5-T1

Question 29

Deep branch of the radial nerve pierces what muscle

Answer 29

Supinator

Question 30

When the deep branch of the radial nerve exits out of supinator at the distal border it becomes what

Answer 30

Posterior interosseous nerve

Question 31

What muscles have the motor supply of the radial nerve prior to its bifurcation

Answer 31

Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis

Question 32

The PIN controls what type of movements

Answer 32

Finger extension, and to small degree, wrist extension

Question 33

Supinator syndrome can have what symptoms

Answer 33

Pain and tenderness in the proximal forearm during activity and finger extension weakness

Question 34

What symptom is not present in supinator syndrome

Answer 34

Numbness

Question 35

What is supinator syndrome

Answer 35

Posterior interosseous nerve may be compressed where it passes through the supinator muscle in the proximal forearm

Question 36

What muscles are innervated by radial nerve in forearm

Answer 36

Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, supinator

Question 37

What muscles in the forearm are innervated by the posterior interosseous nerve

Answer 37

Extensor carpi ulnaris, extensor digiti minimi, extensor digitorum, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, extensor indicis