PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT a characteristic of normal blood flow to the heart?
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passive
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continuous
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steady flow then pulsatile
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unidirectional
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Explanation:
Detailed explanation-1: -Blood flows in the arteries of living beings are unsteady pulsatile flows, which are different from steady flow [19–21]. The instability in a stenosed vessel is dependent on the unsteady acceleration or deceleration in pulsatile flows due to the Coanda effect [22].
Detailed explanation-2: -Like all fluids, blood flows from a high pressure area to a region with lower pressure. Blood flows in the same direction as the decreasing pressure gradient: arteries to capillaries to veins. The rate, or velocity, of blood flow varies inversely with the total cross-sectional area of the blood vessels.
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