Aortic aneurysms are a serious symptom present in Marfan's syndrome. They result from an improper function of:
a. Elastic laminae produced by smooth muscle cells
b. Gap junctions between cells of the tunica intima and tunica media
c. Reticular fibers in the tunica intima
d. Tight junctions of endothelial cells
e. Vasa vasorum of the tunica adventitia
ANS: A
Marfan's syndrome results from abnormalities in fibrillin, a protein component of elastic fibers.
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