Question

Differentiate between the following.
Inhalation and exhalation

Answer 1

1. Inhalation: Breathing in atmospheric air is known as inhalation.
2. Exhalation: Breathing out deoxygenated (CO2-rich) air is known as exhalation.

Inhalation	Exhalation
1. Inhalation is caused due to increased volume of the thoracic or chest cavity.	1. Exhalation is caused due to a decreased volume in the thoracic or chest cavity.
2. O2-rich air rushes into the lungs during inhalation.	2. CO2-rich air is released during exhalation.
3. The diaphragm is flat during inhalation.	3. The diaphragm is dome-shaped during exhalation.