Unit One Brachial Nerves

Question 1

Musculocutaneous nerve originates from

Answer 1

C5-C7

Question 2

Musculocutaneous nerve pierces what

Answer 2

Coracobrachialis (medial to lateral) and emerges on the anterior surface

Question 3

Musculocutaneous nerve runs between

Answer 3

Brachialis and biceps muscle bodies

Question 4

Musculocutaneous nerve pierces what fascia

Answer 4

Brachial

Question 5

After piercing fascia, the musculocutaneous nerve runs lateral on forearm with what other vessel

Answer 5

Cephalic vein

Question 6

Musculocutaneous nerve innervates what muscles

Answer 6

Biceps brachii, coracobrachialis and brachialis (muscles of the anterior compartment of arm)

Question 7

Musculocutaneous nerve is sensory to

Answer 7

Lateral antebrachium

Question 8

Median nerve originates from

Answer 8

C6-C8 and T1

Question 9

Median nerve is formed by

Answer 9

Medial and lateral branches of the lateral and medial cord

Question 10

Median nerve forms anterior to what vessel

Answer 10

Axillary artery

Question 11

The median nerve runs what of brachial artery

Answer 11

Lateral surface

Question 12

Where on arm does the median nerve crosses medial side and comes in contact with brachialis muscle

Answer 12

Mid arm

Question 13

The median nerve enters what fossa deep to bicipital aponeuroses and median cubital vein

Answer 13

Cubital fossa

Question 14

Does the median nerve have branches in the arm

Answer 14

No

Question 15

Median nerve is a major player for what muscles

Answer 15

Muscles in the forearm and hand

Question 16

Median nerve is sensory to

Answer 16

In the hand the radial 2/3rds of palm and dorsum and the 2nd, 3rd and radial half of the 4th distal to the interphalangeal joint

Question 17

The ulnar nerve originates from

Answer 17

C8 and T1

Question 18

The ulnar nerve is a continuation of

Answer 18

Medial cord

Question 19

The ulnar nerve runs anterior to the insertion of what muscle

Answer 19

Teres major and long head of triceps on medial aspect of axillary/ brachial artery

Question 20

What nerves run with the ulnar nerve and form proximal to the ulnar nerve

Answer 20

Medial brachial and medial antebrachial cutaneous nerves

Question 21

Does the ulnar nerve innervate muscles in the arm

Answer 21

No

Question 22

The ulnar nerve innervates what type of muscles

Answer 22

Forearm and hand

Question 23

Sensory of ulnar nerve

Answer 23

Medial surface of the arm and forearm

Question 24

Radial nerve originates from

Answer 24

C5-C8

Question 25

Radial nerve formed by

Answer 25

Posterior cord

Question 26

Radial nerve position compared to axillary artery

Answer 26

Posterior to axillary

Question 27

Radial nerve begins

Answer 27

Posterior to axillary artery, medial to humerus and anterior to the subscapularis muscle

Question 28

Radial nerve crosses what to run anterior to the long head of triceps

Answer 28

Latissimus dorsi

Question 29

Radial nerve passes through what along with profunda brachii and axillary artery

Answer 29

Triangular interval

Question 30

Radial nerve enters what of the humerus with profunda

Answer 30

Spiral groove

Question 31

Before the radial nerve enters the spiral groove of humerus, it innervates what

Answer 31

Long and lateral heads of triceps

Question 32

In the spiral groove, the radial nerve it innervates

Answer 32

Medial head of the triceps and anconeus, posterior arm and forearm

Question 33

After radial nerve exits groove it pierces what and then runs between

Answer 33

Lateral intermuscular septum, brachialis and brachioradialis

Question 34

When the radial nerve reaches the cubital fossa, it splits into

Answer 34

Deep muscular and superficial branch

Question 35

Sensory of radial nerve

Answer 35

Lateral dorsum of hand and proximal 1/2 of the 2nd and 3rd digits

Question 36

Axillary nerve originates from

Answer 36

C5 and C6

Question 37

Axillary nerve is a terminal branch of

Answer 37

Posterior cord

Question 38

Location of axillary nerve to axillary artery

Answer 38

Posterior to axillary artery

Question 39

After the axillary nerve branches from posterior cord is passes laterally through

Answer 39

Quadrangular space

Question 40

Axillary nerve enters into quadrangular space with what artery

Answer 40

Posterior circumflex humeral artery

Question 41

The axillary nerve sends a branch to what when it circles the surgical neck

Answer 41

Superior lateral brachium (over body of deltoid muscle)

Question 42

Where does axillary nerve terminate

Answer 42

Teres minor, deltoid and a sensory branch to the glenohumeral joint

Question 43

Sensory of axillary nerve

Answer 43

Lateral aspect of the superior brachium (deltoid)