Circulatory System

Front

What is the circulatory system?

Back

The circulatory system consists of the heart and blood vessels that use blood to bring cells what they need and take away what they don’t.

Front

What are the three basic functions of the circulatory system?

Back

1. Move blood throughout the body. 2. Bring oxygen and nutrients to organs, muscles, and tissues. 3. Remove waste products like carbon dioxide.

Front

What happens to blood in the capillaries?

Back

In the capillaries, blood oxygen is exchanged for waste.

Front

What is the role of the heart in the circulatory system?

Back

The heart pumps blood through the body in a circuit, delivering oxygen and nutrients and removing waste.

Front

What is the difference between pulmonary circulation and systemic circulation?

Back

Pulmonary circulation is the movement of blood from the heart to the lungs and back, while systemic circulation supplies oxygen-rich blood to the whole body.

Front

How much blood does the heart circulate daily?

Back

The heart circulates about 2,000 gallons (more than 7,500 liters) of blood every day.

Front

What happens if the brain does not receive enough blood?

Back

If the brain doesn’t get the blood it needs, a person can lose consciousness within seconds and can suffer brain damage after four minutes without blood flow.

Front

What do veins and arteries do in the circulatory system?

Back

Veins return blood to the heart, while arteries carry blood away from the heart.

Front

What is the function of the right ventricle?

Back

The right ventricle sends oxygen-poor blood to the lungs.

Front

What do pulmonary veins do?

Back

Pulmonary veins carry oxygenated blood from the lungs to the heart's left atrium.