Circulatory System Quiz

What is the circulatory system?

• The system that helps you breathe.

• The system that helps you move.

• The system that transports blood.

• The system that sends electrical signals.

With circulation, the heart provides your body with:

• Oxygen

• Nutrients

• A way to get rid of waste

• All of the above

The heart is a large that pumps blood throughout the body.

• Organ
• Muscle
• Tissue

• Vein

The circulatory system is composed of the heart, blood, and blood (a)   .

• Vessels

• Cells

• Tissues

• Chambers

The heart is composed of (a)   chambers.

• Two

• Four

• Three

• Five

Why is the blood that flows from the lungs to the heart bright red rather than dark red?

• It contains more carbon dioxide.

• It is rich in oxygen.

• It is moving faster.

• It has lost nutrients.

Which blood vessels have the thinnest walls and why?

• Arteries, to handle high pressure.

• Veins, to carry more blood.

• Capillaries, for gas and nutrient exchange

Why does your heart beat faster when you exercise?

• To pump more blood and oxygen to the muscles.

• To remove waste more slowly.

• To slow down digestion.

• To decrease body temperature.