Respiratory System Quiz

What happens to your chest when you breathe in?

• It gets bigger

• It gets smaller

• It stays the same

• It moves up and down

What muscle helps the lungs move when we breathe?

• Heart

• Stomach

• Diaphragm

• Liver

Which of the following happens when you breathe out?

• The diaphragm contracts and moves downwards

• The diaphragm relaxes and moves upwards

• The ribs move outwards

• The lungs fill with air

Air enters the body through which parts?

• Mouth and nose

• Ears and nose

• Eyes and mouth

• Mouth and ears

Which part of the respiratory system is responsible for carrying air to the lungs?

• Windpipe (trachea)

• Esophagus

• Diaphragm

• Stomach

What gas do we need to survive that is taken in by the lungs?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

When the diaphragm relaxes and moves upwards, what happens to the air in the lungs?

• It stays in the lungs

• It is pushed out of the lungs

• It expands into the stomach

• It circulates inside the lungs

How do we expel carbon dioxide from the body?

• By breathing in

• By breathing out

• Through the skin

• Through sweating

What happens to the diaphragm when we breathe in?

• It moves upwards

• It relaxes

• It contracts and moves downwards

• It pushes on the stomach

Which of the following is NOT part of the respiratory system?

• Lungs

• Diaphragm

• Windpipe

• Stomach