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प्रश्न
Differentiate between inhalation and exhalation.
उत्तर
- Inhalation:
- The muscles of the diaphragm contract.
- The diaphragm goes downward.
- The ribs move upwards and outwards.
- The volume of thoracic (chest) cavity increases.
- Air enters the lungs through the nose.
- Exhalation:
- The muscles of the diaphragm relax.
- The diaphragm goes upward.
- The ribs move downwards.
- The volume of thoracic (chest) cavity decreases.
- Air goes out of the lungs through the nose.
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