The figures shows a fragment of a clot separating and moving downstream in the venous system.When the clot encounters a vessel with a diameter smaller than itself it will become lodged and the flow of blood will be blocked.Where is this most likely to happen?

A) in the aorta
B) in the arteries or arterioles of the lung
C) in the right atrium or right ventricle
D) in the left atrium or left ventricle

Question

The figures shows a fragment of a clot separating and moving downstream in the venous system.When the clot encounters a vessel with a diameter smaller than itself it will become lodged and the flow of blood will be blocked.Where is this most likely to happen?

A) in the aorta 
B) in the arteries or arterioles of the lung 
C) in the right atrium or right ventricle 
D) in the left atrium or left ventricle

Quizplus · Accepted Answer

The pulmonary arteries and arterioles have smaller diameters than other vessels in the circulatory system. Therefore, it is more likely for a clot to become lodged and cause a blockage in these vessels.

The Figures Shows a Fragment of a Clot Separating and Moving