Cardiovascular System

Question 15 - Single Best Answer

A patient comes in to the ER with a complaint of back pain that "throbs". His blood pressure is rapidly decreasing(a bad sign) and his pulse is rapidly increasing in order to maintain blood circulation. This occurs when the aortic wall separates and blood fills the new space rather than move distally to the tissues. Also, the cardiovascular system detects this as acute blood loss so the pulse increases. This process is known as aortic dissection. Find the photo of a normal aorta.

D)

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This an arteriole within the vasa vasorum of the aorta.