Expiration

Definition

Expiration is the process of releasing air from the lungs during breathing. It occurs after inhalation and involves the diaphragm relaxing to push air out.

Related terms

Inhalation:

Inhalation is the act of drawing air into the lungs, involving the diaphragm contracting and moving downward.

Diaphragm:

The diaphragm is a major muscle involved in breathing that contracts to allow inhalation and relaxes to enable expiration.

Alveoli:

Alveoli are tiny sacs within the lungs where gas exchange between air and blood takes place, crucial for both inhalation and expiration processes