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Assertion : Inspiration occurs due to muscular relaxation.
Reason : During inspiration, the diaphragm and external intercostal muscle contract simultaneously.
  • 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 : Inspiration occurs due to muscular relaxation.Reason : Dur...
Inspiration is the result of muscular contraction. The diaphragm and external intercoastal muscle contracts simultaneously. The lateral thoracic wall moves outward and upward.
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Community Answer
Assertion : Inspiration occurs due to muscular relaxation.Reason : Dur...
Assertion and Reason Analysis:

Assertion: Inspiration occurs due to muscular relaxation.

Reason: During inspiration, the diaphragm and external intercostal muscle contract simultaneously.

Explanation:
- During inspiration, the diaphragm and external intercostal muscles contract, causing the thoracic cavity to expand.
- When these muscles contract, it leads to an increase in the volume of the thoracic cavity, which results in a decrease in pressure within the lungs.
- This decrease in pressure allows air to rush into the lungs, leading to inspiration.
- Muscular relaxation is required for expiration, where the diaphragm and external intercostal muscles relax, causing the thoracic cavity to decrease in volume.
- This decrease in volume increases the pressure within the lungs, forcing air out of the lungs during expiration.

Assertion and Reason Relationship:
- The reason provided explains why muscular relaxation is essential for inspiration to occur.
- The contraction of the diaphragm and external intercostal muscles during inspiration leads to the expansion of the thoracic cavity, which is necessary for inhaling air.
Therefore, option 'A' is the correct choice as both the Assertion and Reason are true, and the Reason correctly explains the Assertion.
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Assertion : Inspiration occurs due to muscular relaxation.Reason : During inspiration, the diaphragm and external intercostal muscle contract simultaneously.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?
Question Description
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