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Question

The normal range of ‘breathing rate’ per minute of an average adult person at rest is:


A

9-12

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B

15-18

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C

21-24

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D

30-33

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Solution

The correct option is B

15-18


The correct option is B.
Explanation of the correct option:

  1. The process, by which air is drawn in from the atmosphere into the lungs and forced out from the lungs back into the atmosphere is known as breathing.
  2. One complete breath involves two phases- inspiration and expiration.
  3. The number of times a person breathes in one minute is called breathing rate.
  4. The breathing rate in normal adults at rest is about 15-18 times per minute.

Final answer:
The normal range of ‘breathing rate’ per minute of an average adult person at rest is 15-18 times per minute.


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