1.4 The lungs and breathing

Question 1

What do we use our lungs for?

Answer 1

We use our lungs for breathing.

Question 2

Where can we find the lungs?

Answer 2

We can find the lungs in our chest.

Question 3

Are the lungs protected?

Answer 3

Yes, they are protected by the ribs.

Question 4

How did the air get to the lungs?

Answer 4

The air first enters the body through the nose or the mouth. Then, the air goes down the windpipe and into the lungs.

Question 5

What happened to the diaphragm when you breathe in?

Answer 5

When you breathe in or inhale, your diaphragm contracts and move downward.

Question 6

What happened to the diaphragm when you exhale?

Answer 6

Your diaphragm tightens and flattens.

Question 7

We breathe in ______ from the air.

Answer 7

oxygen

Question 8

As your body uses up oxygen, it makes _____.

Answer 8

carbon dioxide

Question 9

Carbon dioxide is not a waste gas.
True or False?

Answer 9

False, carbon dioxide is a waste gas that the body must get rid of.