Please answer the following multiple choice questions -- explain too please 1. Blood flow in the...

Please answer the following multiple choice questions -- explain too please

1. Blood flow in the coronary circulation

a. increases during systole

b. increases during diastole

2. Oncotic pressure normally helps to draw fluid into

a. arterial ends of capillaries

b. interstitial fund

c. venous ends of capillaries

3. If a blood vessel is vasocontricted

a. the region in front of the constriction will have increased blood pressure and the region after the constriction will have reduced blood pressure

b. the region in front of the constriction will have reduced blood pressure and the region after the constriction will have increased blood pressure

Solutions

Expert Solution

Question 1.

B. Increases during diastole.

Explanation.

During systole the heart muscle contracts.
Contraction of heart muscle obstruct the heart vessels.
So less blood flow to the contracted muscle.
During diastole heart relaxes , no obstruction to blood vessel.
This increases blood flow.

Question 2.

C. Venous end of capillaries.

Oncotic pressure help to pull water to the venous end of capillaries.
In arterial end hydrostatic pressure more result in filteration.
Whereas venous end oncotic pressure more so water pull .

Question 3.

the region in front of the constriction will have increased blood pressure and the region after the constriction will have reduced blood pressure

Explanation.

Vasoconstriction reduces the blood flow.
So that blood volume to the infront part reduce.
At a same time resistance or force of blood flow increases .
This increases blood pressure.

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Sydney Mullin answered 8 months ago

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