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Assertion : During inspiration, pressure of air falls in the thorax.
Reason : There is a rise in volume of thorax during inspiration.
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  • c)
    If Assertion is true but Reason is false.
  • d)
    If both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Assertion : During inspiration, pressure of air falls in the thorax.Re...
During inspiration (breathing in) the pressure of air falls in the thorax because of increase in its volume which is brought about by the contraction of diaphragm and inspiratory muscles. Since lungs are situated in the thorax, therefore a fall of pressure in thorax also lowers the pressure inside lungs, due to which air from outside rushes into the lungs through nostrils, trachea and bronchi.
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Community Answer
Assertion : During inspiration, pressure of air falls in the thorax.Re...
Assertion and Reason Explanation:

Assertion:
- During inspiration, pressure of air falls in the thorax.

Reason:
- There is a rise in volume of thorax during inspiration.

Explanation:
- When a person inhales, the diaphragm contracts and moves downward, while the intercostal muscles contract to move the ribcage up and out. This results in an increase in the volume of the thoracic cavity.
- According to Boyle's Law, when the volume of a gas increases, the pressure decreases. Therefore, as the volume of the thorax increases during inspiration, the pressure of air in the thorax falls.
- Hence, both the Assertion and Reason are true, and the Reason correctly explains why the pressure of air falls in the thorax during inspiration.
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Assertion : During inspiration, pressure of air falls in the thorax.Reason : There is a rise in volume of thorax during inspiration.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer?
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Assertion : During inspiration, pressure of air falls in the thorax.Reason : There is a rise in volume of thorax during inspiration.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion : During inspiration, pressure of air falls in the thorax.Reason : There is a rise in volume of thorax during inspiration.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion : During inspiration, pressure of air falls in the thorax.Reason : There is a rise in volume of thorax during inspiration.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'A'. Can you explain this answer?.
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