What is one reason blood pressure in an artery is higher than in a vein?
A) Arteries have thick walls that contain layers of muscle and connective tissue.
B) Arteries have one-way valves to prevent blood from flowing backward.
C) Arteries contain only oxygenated blood.
D) Arteries contain all types of blood cells, whereas veins contain only erythrocytes.
Correct Answer:
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