CAMRT Radiography Practice Exam

Which arteries branch off the aortic arch?

1. Brachiocephalic, Left common carotid, Left subclavian

2. Right subclavian, Right carotid, Left subclavian

3. Superior mesenteric, Left common carotid, Brachiocephalic

4. Renal arteries, Brachiocephalic, Celiac trunk

The correct answer is: Brachiocephalic, Left common carotid, Left subclavian

The correct answer identifies the three primary arteries that directly branch off the aortic arch, which are the brachiocephalic trunk, the left common carotid artery, and the left subclavian artery. The brachiocephalic trunk, also known as the innominate artery, divides into the right common carotid and right subclavian arteries. However, it is important to note that this trunk arises directly from the aortic arch itself. The left common carotid and left subclavian arteries branch directly from the arch, making them critical components of the systemic arterial supply to the head, neck, and upper limbs. Understanding the anatomy of the aortic arch and its branches is vital for radiographers, especially in procedures that involve imaging of the thoracic area and cardiovascular structures. Recognizing these branches aids in comprehending blood flow and potential pathologies related to vascular structures. The other options presented include arteries that either do not branch from the aortic arch or pertain to vascular territories not supplied by it, reinforcing the significance of accurately identifying the relevant arteries.