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Question

Which of the following is not possible when pneumotaxiccentre is sending a strong signal?


A

Increase in rate of breathing

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B

Complete filling of lungs

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C

Decreased duration of inspiration

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D

Decreased duration of expiration.

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Solution

The correct option is B

Complete filling of lungs


Pneumotaxiccentre is present in the pons and controls the switch point of inspiration. When sending a weak signal, inspiration lasts for 5s causing complete filling of the lungs. When sending a strong signal, the rate of breathing increase i.e., the duration of inspiration and expiration decreases and complete filling of lungs is not possible.


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