ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blood flow increases as viscosity increases
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blood flow increases as blood pressure increases
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blood flow decreases as blood pressure increases
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blood flow decreases as blood vessel diameter increases
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Detailed explanation-1: -Correct option: (B) Blood flow increases when vascular resistance increases. ‘Vasodilation’ is defined as the expansion of blood vessels, caused by the relaxation of the muscle cells within the blood vessel walls.
Detailed explanation-2: -As blood volume decreases, blood pressure and blood flow also decrease. Increased viscosity increases blood flow. All of the above are true.
Detailed explanation-3: -When blood pressure is too low, not enough blood reaches all parts of the body. As a result, cells do not receive enough oxygen and nutrients, and waste products are not adequately removed. Thus, the affected cells and the organs they are in begin to malfunction.
Detailed explanation-4: -Answer and Explanation: The statement (c) Artery walls help to maintain pressure, even between heartbeats is TRUE about blood pressure.