14. Arm: Serial Cross Section

Question 1

Identify 1 - 3

Answer 1

1. Biceps brachii muscle (Short and Long heads)
2. Coracobrachialis muscle
3. Deltoid muscle

Question 2

Identify 4 - 5

Answer 2

4. Brachialis muscle

5. Radial nerve

Question 3

Identify 6

Answer 3

6. Triceps brachii muscle (Medial, Lateral, and Long heads)

Question 4

Identify 7

Answer 4

7. Brachioradialis muscle

Question 5

Identify 8

Answer 5

8. Musculocutaneous nerve

Question 6

Functionally, the arm is divided into an anterior compartment and a posterior compartment.

The anterior compartment contains (1)___
The posterior compartment contains (2)____

Answer 6

1. the flexors of the elbow

2. the extensors of the elbow.

Question 7

The musculocutaneous nerve innervates the muscles of ____

Answer 7

the anterior, or flexor, compartment.

Question 8

The radial nerve innervates the muscles of ___

Answer 8

the posterior, or extensor, compartment. 2. the extensors of the elbow.

Question 9

The anterior compartment is supplied largely by _____. (blood)

Answer 9

the brachial artery and its branches

Question 10

The posterior compartment of forearm is supplied largely by ___

Answer 10

the deep brachial (profunda brachii) artery and its branches.

Question 11

The median and ulnar nerves pass through the arm in ___ as they course to the forearm

Answer 11

a medial neurovascular bundle compartmen

Question 12

The median and ulnar nerves pass through the arm in a medial neurovascular bundle compartment as they course to the forearm. These 2 nerves do not innervate __

Answer 12

muscles of the arm.

Question 13

The radial nerve passes around __ to gain access to the posterior compartment of the arm.

Answer 13

the shaft of the humerus