The Arm

Question 1

What nerve innervates the anterior compartment of the arm?

Answer 1

-Musculocutaneous nerve (from lateral cord C5, C6 and C7)

Question 2

What muscles are in the posterior compartment of the arm?

Answer 2

-Triceps brachii

Question 3

What is the function of triceps brachii?

Answer 3

-Extension of forearm

Question 4

What nerve innervates triceps brachii?

Answer 4

-Radial nerve

Question 5

What is the function of coracobrachialis?

Answer 5

• Flexion of arm at shoulder

- Adduction

Question 6

What artery supplies coracobrachialis?

Answer 6

-Brachial artery

Question 7

What is the function of brachialis?

Answer 7

-Flexion of the forearm

Question 8

What artery serves brachialis?

Answer 8

• Brachial

- Radial recurrent

Question 9

What is the function of biceps brachii?

Answer 9

• Supination

- Flexion of forearm

Question 10

What artery supplies biceps brachii?

Answer 10

-Brachial

Question 11

What are the three heads of triceps brachii?

Answer 11

• Triceps medius
• Triceps lateral head
• Triceps long head

Question 12

What artery supplies triceps brachii?

Answer 12

-Deep brachial (Profunda brachii)

Question 13

What are the muscles in the anterior compartment of the arm?

Answer 13

• Coracobrachialis
• Biceps brachii
• Brachialis