Shape of the arterial pulse is influenced by
A. Viscosity of bloodB. Velocity of blood
C. Arterial wall expansion
D. Cross sectional area of artery.
Ans. C The blood forced into the aorta during systole not
only moves the blood in the vessels forward but also sets up a pressure wave
that travel along the arteries. The
pressure wave expends the arterial wall as it travels, and expansion is
palpable as the pulse.
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