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Assertion : Asthma is a difficulty in br...

Assertion : Asthma is a difficulty in breathing caushing wheezing.
Reason : Asthma occurs due to inflammation of bronchi and bronchioles.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true and 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.

Text Solution

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The correct Answer is:
A
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NCERT FINGERTIPS-BREATHING AND EXCHANGE OF GASES-Breathing And Exchange Of Gases
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  2. In breathing movements, air volume can be estimated by

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  3. From the following relationship between respiration volumes and capaci...

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  4. The oxygen - haemoglobin dissociation curve will show a right shift in...

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  5. Match the following and mark the correct options.

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  6. Assertion : Vocal cords consists of three pairs of mucous membrane tha...

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  7. Assertion : Tracheae, primary, secondary and tertiary bronchi are supp...

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  8. Assertion : The lungs are situated in thoracic chamber which is anatom...

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  9. Assertion : The abdominal muscles are primarily involved in generating...

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  10. Assertion : If two men, expire the same volume of air after normal ins...

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  11. Assertion : Alveoli are the primary sites for exchange of gases. Rea...

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  12. Assertion : A sigmoid curve is obtained when percentage saturation of ...

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  13. Assertion : A rise in PCO(2), H^(+) ions and temperature shifts the Hb...

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  14. Assertion : At the tissue level, 70 percent of CO(2) formed from conta...

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  15. Assertion : Chloride shift is exchange of Cl^(-) of plasma and HCO(3)^...

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  16. Assertion : The role of oxygen in the regulation of respiratory rhythm...

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  17. Assertion : Pneumotaxic centre, located in the medulla region of the b...

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  18. Assertion : Emphysema is the permanent abnormal inflation of air space...

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  19. Asertiion : Inspirations occurs when there is a negative pressure in t...

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  20. Assertion : Asthma is a difficulty in breathing caushing wheezing. R...

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