It is where air enters the body

They clean the air and make it warm and moist before going to the pharynx.

It connects the nasal passages to the larynx.

It connects the pharynx to the trachea and contains the vocal folds.

They are in the larynx and help us speak.

It is a rigid tube make up of hard rings where air passes through.

They are the two branches in which the trachea divides to enter both lungs.

They are the branches inside the lungs in which bronchi divide

They are tiny sacs with capillaries where the exchange of gases takes place.

It is a gas in the air that our cells need to obtain energy from nutrients.

It is a gas that our cells produce when they obtain energy from nutrients and oxygen. It is a waste product.

In this process, oxygen gets from the air to the alveoli and enters the blood.

In this process, carbon dioxide enters the alveoli from the blood and leaves the body.