Why are the walls of arteries generally thicker than the walls of veins?
Correct answer: A. Arteries receive blood under higher pressure
- A. Arteries receive blood under higher pressure
- B. Arteries contain valves throughout their length
- C. Arteries always carry oxygenated blood
- D. Arteries have wider internal lumens
Explanation
Arteries have thick, elastic and muscular walls to tolerate and regulate the higher pressure produced by ventricular contraction. Arteries do not always carry oxygenated blood, as shown by the pulmonary artery, and valves are mainly characteristic of many veins.
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About Cardiovascular System
The cardiovascular system covers the chambers, valves and major vessels of the heart, the cardiac cycle, conduction pathway, blood pressure and the circulation through pulmonary and systemic circuits. It also explains artery, vein and capillary structure, exchange at capillary beds, and how the cardiac cycle differs from general blood flow.
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