Question

multiple choice question
what is the aortic sinus?
the portion of the aortic arch where baroreceptors are located
the vessel that returns deoxygenated blood to the heart that supplies the aorta
a swelling in the aortic wall opposite an aortic cusp
the space formed by the semilunar valves during ventricular contraction

Explanation:

The aortic sinus is a swelling in the aortic wall opposite an aortic cusp. Baroreceptors in the aortic arch are in a different location. The vessel returning deoxygenated blood to the heart is not related to the aortic sinus. The space formed by semilunar valves during ventricular contraction is not the aortic sinus.

Answer:

A swelling in the aortic wall opposite an aortic cusp