INBDE (Integrated National Board Dental Examination) Practice Exam

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The axillary artery changes its name to what once it enters the arm?

Radial artery
Subclavian artery
Ulnar artery
Brachial artery

The correct answer is: Brachial artery

Once the axillary artery enters the arm, it changes its name to the brachial artery. This change occurs at the lower border of the teres major muscle in the upper arm. The brachial artery continues down the arm, giving off branches that supply blood to the muscles and tissues of the arm before dividing further into the ulnar and radial arteries in the cubital fossa at the elbow level. Option A (Radial artery), option B (Subclavian artery), and option C (Ulnar artery) are not the correct answers. The radial artery is one of the terminal branches of the brachial artery in the forearm, the subclavian artery is a major blood vessel arising from the aortic arch and supplying the upper thorax and arm, and the ulnar artery is another one of the terminal branches of the brachial artery in the forearm.