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Differentiate between inhalation and exhalation on basis of types of respiratory gas involved movement of lungs, thoracic cavity diaphragm.
Answers
Answer:
Inhalation
1. Inhalation is a part of breathing where the air is taken into the lungs by creating negative pressure by the contraction of respiratory muscles and diaphragm.
2. Inhalation is also called inspiration.
3. Inhalation is an active process as it involves the contraction of muscles.
4. The diaphragm contracts and flattens during inhalation causing it to move down.
Exhalation
1. Exhalation is a part of breathing where the air is drawn out of the lungs by the relaxation of respiratory muscles.
2. Exhalation is also called expiration.
3. Exhalation is a passive process as it involves the relaxation of muscles.
4. The diaphragm relaxes and becomes dome-shaped causing it to move up.
Answer:
Difference Between Inhalation and Exhalation
The table below shows the differences between inhalation and exhalation
Inhalation Exhalation
What it means
Intake of air into the lungs Expelling air out of the lungs
Type
Active process Passive process
Size of the chest in the process
Increases, expands Decreases, reduces
Diaphragm – role
Contracts, gets flattened by moving down Relaxes, moves up forming a dome-shape
Intercostal muscle – role
Relaxation of internal intercostal muscles and contraction of external intercostal muscles Contraction of the internal intercostal muscles and relaxation of external intercostal muscles
Lungs – volume
Rises to cause inflation Reduces causing deflation
Action it causes
Supply of oxygen-rich air to the blood Carbon dioxide is expelled out
Air composition
Inhaled air is a mix of oxygen and nitrogen Exhaled air is a mix of nitrogen and carbon dioxide
Air pressure
Decrease Increase
Effect of intercostal muscles
Ribcage moves upwards and outwards Ribcage moves downwards
Explanation:
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