First slide

Regulation of Respiration

Question

Which of the following is correct regarding chemosensitive area?

Easy

A

It is located in the pons region.
B

It is highly sensitive to O₂.
C

High H⁺ concentration activates the chemosensitive area.
D

The role of CO₂ is quite insignificant in activating chemosensitive area.

Solution

A chemosensitive area is situated adjacent to the rhythm centre (medulla) which is highly sensitive to CO₂and hydrogen ions. The role of oxygen is quite insignificant in activating chemosensitive area.

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