Respiratory System Quiz

What happens to your chest when you breathe in?

• It gets smaller

• It gets bigger

• It stays the same

• It moves sideways

When you breathe out, what happens to your chest?

• It gets bigger

• It stays the same

• It gets smaller

• It moves upwards

What do we breathe in to stay alive?

• Carbon dioxide

• Oxygen

• Water

• Smoke

What happens to the ribs when you breathe in?

• They move upwards and outwards

• They move downwards and inwards

• They stay in place

• They disappear

What part of the body moves downwards when you breathe in?

• The lungs

• The windpipe

• The diaphragm

• The ribs

What gas do we breathe out that the body does not need?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which organ is protected by the ribs?

• Heart

• Lungs

• Stomach

• Brain

Where does the air go after it passes through the windpipe?

• To the stomach

• Into the lungs

• To the brain

• Into the heart

What muscle helps us breathe by moving up and down?

• The stomach

• The diaphragm

• The lungs

• The ribs

How many lungs do humans have?

• One

• Two

• Three

• Four