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Byju's Answer
Standard XII
Biology
Disorders of the Respiratory System
Asthma is cha...
Question

Asthma is characterised by

A
Damage in diaphragm
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B
Pain in lungs
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C
Alveolar wall degradation
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D
Spasm in bronchial muscle
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Solution

The correct option is D Spasm in bronchial muscle
Asthma

Asthma is a chronic condition of lungs characterised by swelling of bronchi and spasms in muscles of bronchioles. This leads to constriction of the airways and obstructs the flow of air. Asthma patients might feel difficulty in breathing and chest tightness along with persistent coughs.

Final answer
(A) Spasm in bronchial muscle

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Disorders of the Respiratory System
Standard XII Biology
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