How many times a normal man respires per minute?

10 - 15

times

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14 - 18

times

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20 - 25

times

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25 - 30

times

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Solution

The correct option is B $14 - 18$ times
A child respires around 26 times per minute. Norman man respires 14-18 times per minute. If the CO2 concentration in blood increases, the rate of breathing also increases. When CO2 is dissolved in the blood, then blood becomes slightly acidic. The brain picks up the change and adjusts the breathing to get rid of CO2 from the blood. Thus, option B is correct.

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Similar questions

2^{2} \times 5^{4} \times 4^{6} \times 10^{8} \times 6^{10} \times 15^{12} \times 8^{14} \times 20^{16} \times 10^{18} \times 25^{20}

N = 12^{12} \times 14^{14} \times 15^{15}

K = 12^{10} \times 14^{10} \times 15^{10}

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