Cardiovascular System Overview

Front

What is systole?

Back

The contraction of a heart chamber.

Front

What is diastole?

Back

The relaxation of a heart chamber.

Front

What happens to the aortic valve during ventricular systole?

Back

The aortic valve is open.

Front

What happens to the aortic valve during diastole?

Back

The aortic valve is closed.

Front

What does blood pressure measure?

Back

The force of blood against vessel walls.

Front

When is blood pressure the greatest?

Back

During systole, the first, larger number in a blood pressure reading.

Front

What is the smaller number in a blood pressure reading?

Back

Diastole, when the heart relaxes.

Front

What are blood pressure cuffs called?

Back

Sphygmomanometers.

Front

What is considered average (normal) blood pressure?

Back

120/80 mmHg.

Front

What is a dangerous systolic pressure?

Back

Above 180 mmHg — seek medical care.