Chemosensitive areas are situated close to respiratory rhythm centers and are found in CNS. These are mainly sensitive to

Question

Chemosensitive areas are situated close to respiratory rhythm centers and are found in CNS. These are mainly sensitive to (A) CO2 but not H+ changes (B) H+ but not CO2 changes (C) CO2 and H+ changes both (D) CO2 and O2 but not H+ changes

Tardigrade Admin · Accepted Answer

A specialised centre present in the medulla region of the brain, called respiratory rhythm centre, is primarily responsible for this regulation. Another centre present in the pons region of the brain, called pneumotaxic centre, can moderate the functions of the respiratory rhythm centre. The neural signal from this centre can reduce the duration of inspiration, and thereby, alter the respiratory rate. A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to CO2 and hydrogen ions. Increase in these substances can activate this centre, which in turn can signal the rhythm centre to make necessary adjustments in the respiratory process, by which these substances can be eliminated.

Q. Chemosensitive areas are situated close to respiratory rhythm centers and are found in CNS. These are mainly sensitive to

$C O_{2}$ but not $H^{+}$ changes

$H^{+}$ but not $C O_{2}$ changes

$C O_{2}$ and $H^{+}$ changes both

$C O_{2}$ and $O_{2}$ but not $H^{+}$ changes

Q. Chemosensitive areas are situated close to respiratory rhythm centers and are found in CNS. These are mainly sensitive to

CO2​ but not H+ changes

H+ but not CO2​ changes

CO2​ and H+ changes both

CO2​ and O2​ but not H+ changes

$C O_{2}$ but not $H^{+}$ changes

$H^{+}$ but not $C O_{2}$ changes

$C O_{2}$ and $H^{+}$ changes both

$C O_{2}$ and $O_{2}$ but not $H^{+}$ changes