Which of the following about capillaries is false?
A) They have a total cross-sectional area greater than any other class of vessel.
B) Blood moves through them at low velocity.
C) Their walls consist of a single layer of endothelial cells.
D) They are permeable to water and some ions but not to proteins.
E) Blood moves through them at high pressure due to the small diameter of the vessels.

Question

Quizplus · Accepted Answer

The statement "Blood moves through them at high pressure due to the small diameter of the vessels" is false. Capillaries have a very small diameter, which results in a high resistance to blood flow and a drop in blood pressure. Blood moves through them at low velocity.

Which of the Following About Capillaries Is False