3. Why can you feel a pulse when you
keep a finger on the wrist or neck but
not when you keep them on a vein?
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Answer:
Arteries experience a pressure wave as blood is pumped from the heart. This can be felt as a "pulse." Because of this pressure the walls of arteries are much thicker than those of veins. In addition, the tunica media is much thicker in arteries than in veins.
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