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Action of the Diaphragm During Breathing

During exhala...

Question

During exhalation, the diaphragm is_________.

A

Downwards

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B

Upwards

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C

Dome-shaped

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D

Both B and C

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Solution

The correct option is D Both B and C
The diaphragm moves upwards and restores its original shape i.e. dome shape during exhalation or expiration. Thus, Option D is correct.

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Q. Sneha was asked to explain what happens in our body during breathing. The paragraph that she wrote had several mistakes. Identify the mistakes she made and underline them. this is what she wrote.
During inhalation, the ribs move up and outward and the diaphragm moves in. this movement decrease the space in our chest cavity and the air rushes in. During exhalation, the ribs moves down and inward and the diaphragm moves up. This movement increases the space in our chest cavity and the air is pushed out.

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Q. During exhalation, diaphragm moves ___ towards the chest cavity.

Q. What happens to the diaphragm during exhalation?

Inhalation and Exhalation are a result of combined action of thoracic cavity and diaphragms.

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