Question

Which of the following vessels does not derive from the aortic arch?

1) left common carotid artery
2) left subclavian artery
3) right iliac artery
4) brachiocephalic trunk

Answer 1

The right iliac artery does not derive from the aortic arch; it comes from the abdominal aorta. The aortic arch gives rise to the brachiocephalic artery, left common carotid artery, and left subclavian artery. All stated statements regarding arterial anatomy are true.

Step-by-step explanation:

The vessel that does not derive from the aortic arch among the options provided is the right iliac artery.

The aortic arch has three major branches:

• The brachiocephalic artery, which further branches into the right common carotid artery and the right subclavian artery.
• The left common carotid artery arises independently from the aortic arch.
• The left subclavian artery also arises independently from the aortic arch.

The right iliac artery, however, is not a branch of the aortic arch. Instead, it is a division of the abdominal aorta that supplies blood to the lower limb.

Regarding the other multiple-choice question provided, All of the statements are true:

• The left and right common carotid arteries have different branching patterns; the right arises from the brachiocephalic trunk, while the left arises directly from the aortic arch.
• The brachial artery is indeed the distal branch of the axillary artery.
• The radial and ulnar arteries join to form the palmar arch.