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What is the main function of the respiratory system?

• to break food down

• supply the blood with oxygen

• circulate the blood

• controlling the body

How does the respiratory system deliver oxygen to different parts of the body?

• breathing

• circulation

• inhale carbon dioxide

• exhale oxygen

Which part of the body is not used for the respiratory system to work?

• mouth

• nose

• small intestine

• diaphragm

What is the diaphragm's main function?

• pump blood into the lungs

• pump carbon dioxide out of the lungs and pull oxygen into the lungs

• pump oxygen out of the lungs and pull carbon dioxide into the lungs

• pumping blood

Inside each of your lungs there are tubes called bronchi. These branch into even smaller tubes much like the branches of a tree. What are at the ends of these tubes?

• alveoli

• diaphragms

• cells

• lobus

What would happen if your respiratory system stopped working for a while?

• you would get a transplant

• you would die

• nothing

• hard to get oxygen

Which of the following is affected by the respiratory system?

• yawn

• hiccup

• sneeze

• all of the above

What is responsible for picking up the oxygen in lungs and carrying it to all the body cells that need it?

• red blood cells

• white blood cells

• veins

• ventricle

The trachea is a part of the respiratory system. What can the trachea also be called and what is its function?

• windpipe, filters the air we breathe

• windpipe, releases air out of the body

• tubes; carries air to the lungs

The only externally visible part of the respiratory system is

• Nose

• Lungs

• Diaphragm

• Bronchi