Which of the following mechanisms causes hypertension?

A) Arteriosclerosis results in increased elasticity of the arteries, causing vasodilation and increased arteriolar capacity.
B) Atherosclerotic plaque narrows one or more of the coronary arteries, resulting in increased cardiac perfusion.
C) Increased afterload stimulates the Frank-Starling reflex, which raises the pressure behind the blood leaving the heart.
D) Heart rate that is persistently above 80 beats/min causes an increase in cardiac output and a resultant increase in blood pressure.


Answer: C) Increased afterload stimulates the Frank-Starling reflex, which raises the pressure behind the blood leaving the heart.

Health Professions

You might also like to view...

The part of the nervous system that prepares the body to deal with an emergency is the __________ nervous system.

A) somatic B) voluntary C) sympathetic D) parasympathetic

Health Professions

The pathologic mechanism for a too fast heart rate is thought to be due to a ____.

A. depolarization B. macrocircuit C. sinoatrial node re-entry D. re-entry phenomena

Health Professions

Reproduction of lymphocytes is known as lymphocyte:

a. proliferation b. maturation c. display d. response

Health Professions

A flat or raised eruption that can be caused by an allergy or infection is:

A) bulla. B) hives. C) urticaria. D) dermatitis.

Health Professions