Heart Basics
Blood Vessels
Circulation & Flow
Inside the Heart
100

This organ pumps blood throughout your body.

What is the heart

100

These blood vessels carry blood away from the heart.

What are arteries?

100

Blood picks up oxygen in this organ.

What are the lungs?

100

These two chambers receive blood entering the heart.

What are the atria?

200

The heart has this many chambers.

What are four

200

These blood vessels carry blood back to the heart.

What are veins?

200

This is the movement of blood through the body.

What is circulation?

200

These two chambers pump blood out of the heart.

What are the ventricles?

300

These structures prevent blood from flowing backward in the heart.

What are valves?

300

This type of blood vessel is only one cell thick to allow diffusion.

What are capillaries?

300

This waste gas is removed from the blood in the lungs.

What is carbon dioxide?

300

Oxygen-rich blood returns from the lungs to the heart through these vessels.

What are pulmonary veins?

400

Name the four chambers of the heart

Right atrium, left atrium, right ventricle, left ventricle

400

Most arteries carry blood that is high in this.

What is oxygen?

400

Blood flows from the right ventricle to the lungs through this artery.

What is the pulmonary artery?

400

Blood flows from the left atrium into this chamber.

What is the left ventricle?

500

This side of the heart pumps blood to the lungs.

What is the right side of the heart?

500

Valves are especially important in this type of blood vessel.

What are veins?

500

The valve between the right atrium and right ventricle is called this.

What is the tricuspid valve?

500

This valve controls blood flow between the left atrium and left ventricle.

What is the mitral (bicuspid) valve?

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