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Which two of the following changes (a-d) usually tend to occur in the plain dwellers when they move to high altitudes (3500 m or more)?
(i) Increase in red blood cell size
(ii) Increase in red blood cell production
(iii) Increased breathing rate
(iv) Increase in thrombocyte count
Changes occurring are:
Options
(a) (ii) and (iii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (i) and (ii)
Correct Answer:
(ii) and (iii)
Explanation:
At high altitude, the body undergoes numerous changes in order to increase oxygen delivery to cells and improve the efficiency of oxygen usage. The early changes include increased breathing rate and increased red blood cell production.
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Topics: Human Physiology Systems
(35)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The bacterial pseudomonas is useful because of its ability to
- Which of the following is always absent in prokaryotic cells?
- What is the name of the book written by aristotle
- Enzymes differ from ordinary catalysts because enzymes consist of
- Which one of the following hormones though synthesised else where is stored and released
Topics: Human Physiology Systems (35)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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