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Q50
(CDS-I/2024)
Science & Technology › Basic Science (Physics, Chemistry, Biology) › Human anatomy physiology
Answer Verified
Pulse is felt due to the rhythmic contraction and relaxation of the
Result
Your answer:
—
·
Correct:
C
Explanation
The pulse is a rhythmic throbbing felt in superficial arteries, such as those in the wrist or neck.
- When the heart's ventricles pump blood, it is forcefully ejected into the aorta. This surge of blood causes the elastic walls of the aorta and main arteries to expand.
- As the heart rests between beats, the arterial walls elastically recoil.
This continuous cycle of expansion and recoil—often described in textbooks as the rhythmic contraction and relaxation of the arteries—travels as a pressure wave throughout the body.
While the heart is the origin of the pumping force, the actual physical sensation of the pulse that you feel is directly due to this rhythmic movement of the aorta and main arteries.
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