Anterior Arm Compartment

Question 1

What nerve innervates the muscles of the anterior arm compartment?

Answer 1

Musculocutaneous nerve

Question 2

What are the three muscles of the anterior arm compartment?

Answer 2

Coracobrachialis, biceps brachii, and brachialis mm.

Question 3

O- Coracobrachialis m.

Answer 3

Coracoid process

Question 4

I- Coracobrachialis m.

Answer 4

Medial humeral shaft

Question 5

A- Coracobrachialis m.

Answer 5

Flexion and adduction of the arm

Question 6

Inn- Coracobrachialis m.

Answer 6

Musculocutaneous n.

Question 7

O- Biceps brachii m. long head

Answer 7

Supraglenoid tubercle

Question 8

I- Biceps brachii m. long head

Answer 8

Radial tuberosity

Question 9

A- Biceps brachii m. long head

Answer 9

Flexion and supination of the forearm

Question 10

Inn- Biceps brachii m. long head

Answer 10

Musculocutaneous n.

Question 11

O- Biceps brachii m. short head

Answer 11

Coracoid process

Question 12

I- Biceps brachii m. short head

Answer 12

Radial tuberosity

Question 13

A- Biceps brachii m. short head

Answer 13

Flexion and supination of the forearm

Question 14

Inn- Biceps brachii m. short head

Answer 14

Musculocutaneous n.

Question 15

O- Brachialis m.

Answer 15

Mid shaft of anterior portion of humerus

Question 16

I- Brachialis m.

Answer 16

Ulnar tuberosity

Question 17

A- Brachialis m.

Answer 17

Flexion of the arm

Question 18

Inn- Brachialis m.

Answer 18

Musculocutaneous n.

Question 19

What muscle is the strongest flexor in every position?

Answer 19

Brachialis m. because its insertion is on the ulna, which does not rotate.