Cardiovascular System MCQs

Cardiovascular System

Which of the following is not a type of white blood cell?

Leucocyte

Eosinophil

Erythrocyte

Neutrophil

Erythrocytes are red blood cells.

Author: rikazzz Comment

Cardiovascular System

A statement of Boyle’s law could be:

As pressure of a gas increases, its solubility increases.

As volume of a gas increases, its pressure decreases.

As volume of a gas decreases, its pressure decreases.

As pressure of a gas increases, its solubility decreases.

Boyle’s law relates gas volume to its pressure. The relationship is an inverse one, so choice B is correct.

Author: rikazzz Comment

Cardiovascular System

What is “systolic pressure”?

The peak pressure in the blood due to contraction of the left ventricle.

The minimum pressure in the blood prior to contraction of the left ventricle.

It may be obtained by multiplying cardiac output by total peripheral resistance.

It is also known as mean arterial pressure.

Systole means “contraction” in Greek. So systolic pressure is the pressure produced by the contraction of the left ventricle. Choice C refers to mean arterial pressure, which is less than systolic pressure.

Author: rikazzz Comment

Cardiovascular System

Which statement about cardiac output is correct?

Cardiac output is peripheral resistance multiplied by stroke volume.

Mean arterial pressure multiplied by peripheral resistance is cardiac output.

Cardiac output is heart rate multiplied by stroke volume.

Cardiac output is blood volume multiplied by heart rate.

Cardiac output (in ml per minute) = stroke volume (in ml per beat) times heart rate (in beta per minute).

Author: rikazzz Comment

Cardiovascular System

By what name is the heart muscle known?

Epicardium

Myocardium

Pericardium

Endocardium

“Myo-” is the prefix that refers to muscle.

Author: rikazzz Comment