BIOS 1313 Human A&P 2 Home rdiovascular System Quiz m 4 PartA Why does cigarette

Question

BIOS 1313 Human A&P 2 Home rdiovascular System Quiz m 4 PartA Why does cigarette smoking put someone at risk for developing high blood pressure? O Nicotine causes the cardiac output to be reduced and blood pressure to increase. O Cigarette smoking reduces blood volume causing dehydration and an increase in blood pressure. e Nicotine causes vasodilation, increasing perfusion of blood vessels and an increase in blood pressure. Ncotne is a vasoconstnctor which will increase peripheral resistance and blood pressure Submit rovide Feedback

Explanation / Answer

1. It acts as a vasoconstrictor. so it increases the blood pressure. Vasoconstrictor narrows the blood vessels.

so, the answer will be D.

2. The answer will be D.

In D there is the lowest volume in the ventricles.

3. Preload will not increase if we increase the contractility of the heart. As preload does not depend on the cardiac contractility.

4. When elastic fibers are not present the arteries will neither contract nor relax.

As elasticity is due to the elastic fibers. So, the answer to this will be option c.

5. Blood pressure- It is the force exerted by the blood on the walls on blood vessels.

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