Which of the following blood vessel layers may be damaged in a client with an aneurysm?
A. Externa
B. Interna
C. Media
D. Interna and Media
Correct Answer: C. Media
The factor common to all types of aneurysms is a damaged media. The media has more smooth muscle and less elastic fibers, so it’s more capable of vasoconstriction and vasodilation.
Option A: The tunica externa generally has no damage in an aneurysm. The outermost layer, tunica externa, comprises connective tissue providing protection for the vessel.
Option B: The interna generally not damaged in an aneurysm. The tunica intima (New Latin “inner coat”), or intima for short, is the innermost tunica (layer) of an artery or vein. It is made up of one layer of endothelial cells and is supported by an internal elastic lamina. The endothelial cells are in direct contact with the blood flow.
Option D: The media is the most damaged among the blood vessel la