Brachial Plexus - Part 2

Question 1

The suprascapular nerve contains fibers from what?

Answer 1

C5 and C6

Question 2

The suprascapular nerve supplies what two muscles?

Answer 2

supraspinatus

infraspinatus

Question 3

The supraspinatus and infraspinatus are part of what?

Answer 3

The rotator cuff

Question 4

The nerve to the subclavius contains fibers from what?

Answer 4

C5 and C6

Question 5

The nerve to the subclavius supplies what?

Answer 5

subclavius

Question 6

Which nerves are part of the supraclavicular part of the brachial plexus?

Answer 6

Dorsal scapular nerve
Long thoracic nerve
Suprascapular nerve
Nerve to the subclavius

Question 7

The lateral pectoral nerve branches off of what?

Answer 7

The lateral cord of the brachial plexus

Question 8

The lateral pectoral nerve contains fibers from what?

Answer 8

C5,C6, C7

Question 9

The lateral pectoral nerve supplies what muscle?

Answer 9

Pectorals major

Question 10

The pectorals major is supplied by the lateral pectoral nerve but will also receive innervation from what other nerve?

Answer 10

Medial pectoral nerve

Question 11

The musculocutaneous nerve is on of two ______ branches of the ____?

Answer 11

Terminal

Lateral cord

Question 12

The musculocutaneous nerve contains fibers from which nerves?

Answer 12

C5, C6, C7

Question 13

The musculocutaneous nerve supplies 3 (or 4) muscles of the anterior arm. They are?

Answer 13

coracobrachialis
Biceps brachii (both long and short heads)
brachialis

Question 14

Why would you say the musculocutaneous is supplying 4 muscles?

Answer 14

If you include the two heads of biceps brachii as two muscles

Question 15

The musculocutaneous nerve pierces what muscle?

Answer 15

coracobrachialis

Question 16

After piercing the coracobrachialis, the musculocutaneous nerve continues between what? To become what nerve?

Answer 16

Biceps brachii and brachialis

Lateral cutaneous nerve of the forearm

Question 17

The lateral cutaneous nerve of the forearm supplies what?

Answer 17

Skin over lateral aspect of the forearm

Question 18

Does the lateral cutaneous nerve of the forearm supply the hand?

Answer 18

NO

Question 19

The other terminal branch (other than musculocutaneous) of the lateral cord contributes to which nerve?

Answer 19

Median nerve

Question 20

What 4 nerves are branches off the medical cord of the brachial plexus?

Answer 20

Medial pectoral nerve
Medial cutaneous nerve of the arm
Medial cutaneous nerve of the forearm
ulnar nerve

Question 21

The medial pectoral nerve contains fibers from what nerves?

Answer 21

C8 and T1

Question 22

The medial pectoral nerve supplies what two muscles?

Answer 22

Pectoralis major

Pectoralis minor

Question 23

The medial cutaneous nerve of the arm contains fibers from what?

Answer 23

C8 and T1

Question 24

The medial cutaneous nerve of the arm ramifies (branches) where?

Answer 24

In the axilla

Question 25

The medical cutaneous nerve of the arm supplies what?

Answer 25

Skin of medial arm between axilla and elbow

Question 26

The medial cutaneous nerve of the arm receives some fibers from what nerve? How?

Answer 26

T2 | Through a communication w/the intercostobrachial nerve

Question 27

The medial cutaneous nerve of the forearm contains fibers from what nerve?

Answer 27

C8 and T1

Question 28

The medial cutaneous nerve of the forearm supplies what?

Answer 28

Skin over biceps brachii and | Skin over anterior and medial aspects of the forearms distal to the wrist

Question 29

This nerve is one of two terminal branches of the medial cord (along with median nerve).

Answer 29

Ulnar nerve

Question 30

Ulnar nerve contains fibers from what nerves?

Answer 30

C8, T1, and sometimes C7

Question 31

The ulnar nerve travels medial to what? Within what?

Answer 31

Brachial artery | Medial bicipital sulcus (furrow)

Question 32

Does the ulnar nerve give off branches in the arm?

Answer 32

NO

Question 33

The ulnar nerve crossed over the posterior side of what? In what?

Answer 33

The medial epicondyle Sulcus for the ulnar nerve (easily palpated here)

Question 34

What is the ulnar nerve called?

Answer 34

Funny bone

Question 35

The ulnar nerve continues into the forearm between what?

Answer 35

The two heads of the flexor carpi ulnaris

Question 36

The ulnar nerve innervates two muscles in the forearm.

Answer 36

Flexor carpi ulnaris | MEDIAL half of flexor digitorum profundus

Question 37

The ulnar nerve gives off what two branches in the forearm?

Answer 37

Dorsal branch | Palmar branch

Question 38

The dorsal branch of the ulnar nerve supplies what?

Answer 38

Skin on the ulnar side of the posterior hand

Question 39

The palmar branch of the ulnar nerve supplies what?

Answer 39

Skin over the hypothenar eminence

Question 40

The ulnar nerve traveling to the wrist travels deep to what?

Answer 40

Flexor carpi ulnaris