PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is vascular shunt?
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A hormone released from the adrenal glands
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The rise of the heart rate before exercise
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When blood is distributed to the working muscles and less to the non-essential organs
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A drop in temperature of the heart
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Explanation:
Detailed explanation-1: -During exercise, the cardiovascular system redistributes the blood so that more of it goes to the working muscles and less of it goes to other body organs such as the digestive system. This redirection of blood flow is caused by a mechanism (or process) called the vascular shunt mechanism.
Detailed explanation-2: -When vascular smooth muscle contracts, the diameter of the blood vessel becomes smaller. This is called vasoconstriction.
Detailed explanation-3: -The body uses two mechanisms to control this redistribution. Vasoconstriction (narrowing) and Vasodilation (expanding) is used to redistribute blood to essential areas of the body while decreasing blood flow to others.
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