Axilla, Arm, and Elbow

Question 1

What is the nerve and action of the: Coracobrachialis m.

Answer 1

Nerve: Musculocutaneous nerve

Action: Flexes and adducts arm

Question 2

What is the nerve and action of the: Biceps Brachii m.

Answer 2

Nerve: Musculocutaneous nerve

Action: Flexes and suppinates forearm

Question 3

What is the nerve and action of the: Brachialis m.

Answer 3

Nerve: Musculocutaneous nerve

Action: Flexes forearm

Question 4

What is the nerve and action of the: Triceps m.

Answer 4

Nerve: Radial nerve

Action: Extend forearm

Question 5

At what point does the Axillary artery become the Brachial artery?

Answer 5

After it crosses the lower border of the Teres major muscle

Question 6

What is the purpose of the fat and loose connective tissue contained in the axilla?

Answer 6

It allows room for expansion of the vessels and numerous lymph nodes that drain the upper extremity and thoracic wall

Question 7

Nerve: Musculocutaneous nerve

Action: Flexes and adducts arm

Answer 7

nerve and action of the: Coracobrachialis m.

Question 8

Nerve: Musculocutaneous nerve

Action: Flexes and suppinates forearm

Answer 8

nerve and action of the: Biceps Brachii m.

Question 9

Nerve: Musculocutaneous nerve

Action: Flexes forearm

Answer 9

nerve and action of the: Brachialis m.

Question 10

Nerve: Radial nerve

Action: Extend forearm

Answer 10

nerve and action of the: Triceps m.

Question 11

Name the branches of the axillary artery in order divided into their respective 3 parts. (and any branches)

Answer 11

Part 1: Superior thoracic a.

Part 2: Thoracoacromial trunk (DCAP), Lateral thoracic a.

Part 3: Subscapular a. (circumflex scapular a., thoracodorsal a.), Anterior and Posterior circumflex humeral a.’s

Question 12

What are the branches of the brachial artery?

Answer 12

Deep brachial a., superior ulnar collateral a., inferior ulnar collateral a.