A human body system which is responsible in the exchange of gases.

What is the outer part of the respiratory system?

what do you call the opening of the nose?

They trap and destroy bacteria that enter the body through the nose and mouth

A structure or flag that covers the larynx as we swallow food.

These are tiny air sacs where the exchange of carbon dioxide and oxygen occurs.

It allows the lungs to slide freely as they expand and contract.

The process of taking in air into the lungs.

The process of taking in oxygen and taking out carbon dioxide in our body

It helps in filtering the blood and forming urine from waste products.

It temporary stores urine.

It serves as a passageway of urine from the kidneys to the urinary bladder.