Exam 3 Brachial Plexus

Question 1

Name two nerves that form the inferior trunk of the brachial plexus.

Answer 1

C8 and T1

Question 2

The lateral cord of the brachial plexus is formed by ___ division of ___

Answer 2

Anterior

the upper and middle trunks

Question 3

Name the nerves that receive the gray rami communicans from the middle cervical ganglion of the sympathetic trunk.

Answer 3

C5 and C6

Question 4

The eighth cervical ventral ramus contributes the white ramus communicans to the cervicothoracic ganglion. True or False

Answer 4

False - T1

Question 5

Name the spinal nerve which sends the white ramus communicans to the stellate ganglion.

Answer 5

T1

Question 6

The supraclavicular branches of the brachial plexus are from the roots and trunks of the brachial plexus. True or False

Answer 6

True

Question 7

The longus collies are innervated by

Answer 7

C5, C6, C7, and C8 (C2-C4)

Question 8

The nerve to the phrenic nerve from the fifth cervical ventral ramus joins the phrenic nerve at the front of ___ muscle.

Answer 8

Scalenus anterior

Question 9

The supra scapular nerve arises from ___ of the brachial plexus.

Answer 9

Superior trunk

Question 10

The suprascapular nerve enters the supraspinous fossa through the scapular notch above the superior transverse scapular ligament. True or False

Answer 10

False - inferior not above

Question 11

Name the nerve which distributes the deep medial surface of the pectoralis major.

Answer 11

Lateral Pectoral N of C5, C6, C7

Question 12

Name the muscles which are innervated by the medial pectoral nerve

Answer 12

Pectoralis major/minor

Question 13

The upper subscapular nerve is from the ___ cord with ___ roots.

Answer 13

Posterior

C5, C6

Question 14

Name the nerve which innervates the latissimus dorsi.

Answer 14

Thoracodorsal of C6, C7, C8

Question 15

Name the nerve which innervates the teres major

Answer 15

Lower subscapular n of C5, C6

Question 16

Name the superior border of the quadrangular space through which the axillary nerve passes

Answer 16

Subscapularis

Teres major

Question 17

Name the inferior border of the quadrangular space

Answer 17

Teres major

Question 18

Name the medial border of the quadrangular space

Answer 18

Long head of triceps brachialii

Question 19

Name the lateral border of the quadrangular space

Answer 19

Surgical neck of humerus

Question 20

Name the nerve which gives off the upper lateral cutaneous nerve of the arm

Answer 20

Posterior branch of the axillary nerve

Question 21

Name the nerve which pierces the coracobrachialis

Answer 21

Musculocutaneous N of C5, C6, C7

Question 22

The lateral cutaneous nerve of the forearm is a continuation of ___

Answer 22

Musculocutaneous N

Question 23

Name the nerve which supplies the skin over the half of the anterior surface of the forearm

Answer 23

Lateral cutaneous N of the forearm

Question 24

The intercostobrachial nerve communicates with ___ on the arm

Answer 24

Medial cutaneous nerve

Question 25

Name the nerve which arises from medial and lateral cords of the brachial plexus.

Answer 25

Median N

Question 26

Name the nerve which locates between two tendons of the flexor digitorum superficialis and the flexor carpi radials at the proximal to the flexor retinaculum

Answer 26

Median N

Question 27

Name the nerve which innervates the flexor pollicis longus

Answer 27

Anterior osseous n of median N in the forearm

Question 28

Name the nerves which give off the articular nerve to the elbow joint

Answer 28

Median N | Musculocutaneous N

Question 29

The proximal radio-ulnar joint is innervated by

Answer 29

Articular branch of the median n

Question 30

Name the muscles which are innervated by the median nerve in the hand

Answer 30

Flexor pollicis brevis Abductor pollicis brevis Opponens pollicis

Question 31

Name the nerve which innervates the first lumbrical

Answer 31

Palmar digital branches of median n in the hand

Question 32

The ulnar nerve arises from ___ cord with ___ roots

Answer 32

Medial | (C7) C8 & T1

Question 33

Name the nerve which lies in a groove on the dorsum of the medial epicondyle.

Answer 33

Ulnar N

Question 34

The ulnar nerve lays medial/lateral side of the ulnar vessels at the proximal end of the flexor retinaculum.

Answer 34

Medial

Question 35

Name the nerve which innervates the palmaris brevis

Answer 35

Palmar cutaneous branches of ulnar n

Question 36

Name the nerve which supplies the adductor pollicis

Answer 36

Deep terminal branches of ulnar n

Question 37

The deep terminal branch of the ulnar nerve supplies the following, except: Abductor digiti minimi, opponens digiti minimi, adductor pollicis, opponens pollicis

Answer 37

Opponens pollicis

Question 38

The radial nerve arises from the ___ cords with ___ roots

Answer 38

Posterior | C5, C6, C7, C8 (T1)

Question 39

The muscular branches of the radial nerve innervates the following excepts: Long head of biceps brachii, Medial head of triceps brachia, Anconeus, Extensor carpi radialis brevis

Answer 39

Long head of the biceps brachii

Question 40

The posterior interosseous nerve innervates the following except: Extensor digitorum, extensor carpi ulnaris, abductor pollicis brevis, extensor indicus

Answer 40

Abductor pollicis brevis

Question 41

Erb's paralysis can be caused by the injury of ___ or ___

Answer 41

Upper trunk | C5, C6

Question 42

Crutch paralysis can be caused by the injury of

Answer 42

Radial and/or ulnar nerves

Question 43

Winging of the scapula is caused by the paralysis of ___ nerve of ___

Answer 43

Long thoracic N of C5, C6, C7

Question 44

Name the injured nerve which might cause the wrist drop

Answer 44

Radial nerve