Same chapter3 marksDifficulty: Medium
What is the oxygen dissociation curve, and what shifts it to the right?
Breathing and Exchange of Gases
3 marksDifficulty: Medium
Name three respiratory disorders and state the cause of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
Asthma is difficulty in breathing caused by inflammation of the bronchi and bronchioles, often from an allergy. Emphysema is the breakdown of the alveolar walls, reducing the surface for exchange, and is caused chiefly by cigarette smoking. Occupational lung disease such as silicosis is caused by long exposure to dust in industry.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The respiratory centre in the medulla regulates breathing chiefly by monitoring carbon dioxide, not oxygen.
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