Chemosensitive area of respiratory centre in medulla is affected by

Options

A. less `CO, and H^(+)` ions
B. less `O_(2) and H^(+)` ions
C. excess `CO_2 and H^(+)` ions
D. excess `O_(2) and H^+` ions.

Answer

C

Explanation

Human beings have a significant ability to maintain and noderate the respiratory rhythm to suit the demands of the body tissues. A specialised centre present in the medulla region of the brain called respiratory rhythm centre is primarily responsible for this regulation. A chemosensitive area is situated adjacent to the rihythm centre which is highly sensitive to `CO_(2)` and hydrogen ions. Increase in these substances can activate this centre, which in turn can signal the rlhythm centre to make necessary adjustments in the respiratery process by which titese substançes can be eliminated.