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During the process of exhalation, the ribs move - Science

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Question

During the process of exhalation, the ribs move

Options

  • down and inwards.

  • up and inwards.

  • down and outwards

  • up and outward.

MCQ

Solution

down and inwards.

Explanation:

During exhalation, the diaphragm moves up and ribs move downwards and inwards, decreasing the space in the chest cavity, this increases the air pressure inside the lungs and forces the air out of the lungs.

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Chapter 10: Respiration in Organisms - MULTIPLE CHOICE QUESTIONS [Page 52]

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NCERT Exemplar Science [English] Class 7
Chapter 10 Respiration in Organisms
MULTIPLE CHOICE QUESTIONS | Q 3. | Page 52

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