Question

Which of the following is NOT a local regulator of blood flow Select one: a. Calcium...

Which of the following is NOT a local regulator of blood flow

Select one:

a. Calcium

b. Carbon dioxide

c. Potassium

d. Nitric oxide

e. Adenosine

Science   Anatomy-And-Physiology   
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Homework Answers

Answer #1

The right choice is: (a) Calcium

Explanation: Calcium is a vasoconstrictor and it constricts the blood vessels due to which blood flow in blood vessels decreases. Increased concentration of calcium in vascular smooth muscles causes vasoconstriction. Whereas, other agents like carbon dioxide, adenosine, nitric oxide and potassium acts as vasodilator and hence increases blood flow in blood vessels. Hence calcium is not a local regulator of blood flow.

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