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Negative pressure inside lungs is create...

Negative pressure inside lungs is created due to

A

The contraction of muscles of diaphragm & relaxation of external intercostal muscles

B

The relaxation of muscles of diaphragm & contraction of external intercostal muscles

C

The contraction of muscles of diaphragm & contraction of external intercostal muscles

D

The relaxation of muscles of diaphragm & relaxation of external intercostal muscles

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The correct Answer is:
C
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AAKASH SERIES-BREATHING AND EXCHANGE OF GASES -EXERCISE-I (Mechanism of Breathing)
  1. Expiration occurs when

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  2. Which of the following events is not related to inspiration?

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  3. Negative pressure inside lungs is created due to

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  4. Which of the following events is not related to inspiration?

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  5. Humans can increase the strength of both inspiration & expiration with...

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  6. On an average a healthy human breaths times per hour

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  7. The instrument that helps in clinical assessment of pulmonary function...

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  8. Amount of air expelled from the lungs during the quiet breathing per o...

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  9. Volume of air remaining in the lungs even after a forcible expiration ...

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  10. Volume of air that will remain in the lungs after normal expiration is...

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  11. RV + VC =

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  12. Identify the incorrect match about lung volumes.

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  13. For the occurrence of inspiration intra pulmonary pressure should be

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  14. The volume of thoracic chamber increases in dorso-ventral axis due to ...

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  15. Volume of air either inspired or expired during normal respiration is

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  16. Correct one of the following regarding respiratory capacities is

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  17. Maximum volume of air a person can breathe in after a forced expiratio...

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  18. Expiratory reserve volume of a healthy person is

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  19. During inhalation diaphragm

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  20. A person suffers punctures in his chest cavity in an accident, without...

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