1. The _________ pumps blood through the body.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

2. My at-rest _______ rate is usually about 80 beats per minute.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

3. The ____________ is located below the lungs.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

4. Your heart and _________ have to work harder if you're overweight.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

5. The _____are the tubes that carry blood from the heart to other parts of the body.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

6. The ______ is a tube-like structure within the neck and upper chest. It transports air to and from the lungs when a person breathes.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

7. Humans breathe out ______, which plants need to live.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

8. Our lungs, trachea, and diaphragm work together as a ______.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

9. There is ______ on my hand. I think I cut my finger.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide

10. All the ______ in the body carry blood back to the heart.

capillaries

diaphragm

trachea

lungs

pulse

arteries

heart

system

blood

veins

carbon dioxide