Differentiate between exhalation and inhalation.

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Solution

Inhalation:
The process of taking in oxygen-rich air is called inhalation.
Exhalation:
The process of expelling out carbon dioxide-rich air is called exhalation.
Inhalation
Exhalation
1. The ribs are raised upwards and outwards during inhalation.
1. The ribs are raised downwards and inwards during exhalation.
2. The diaphragm flattens during inhalation. 2. The diaphragm becomes dome-shaped during exhalation.
3. The volume of the thoracic cavity and lungs increases. 3. The volume of the thoracic cavity and lungs decreases.
4. Fresh air from the atmosphere rushes into the lungs during inhalation. 4. Air from the lungs is expelled out through the nostrils during exhalation.

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Inhalation	Exhalation
1. The ribs are raised upwards and outwards during inhalation.	1. The ribs are raised downwards and inwards during exhalation.
2. The diaphragm flattens during inhalation.	2. The diaphragm becomes dome-shaped during exhalation.
3. The volume of the thoracic cavity and lungs increases.	3. The volume of the thoracic cavity and lungs decreases.
4. Fresh air from the atmosphere rushes into the lungs during inhalation.	4. Air from the lungs is expelled out through the nostrils during exhalation.