NEET BIOLOGY

Detailed explanation-1: -This center present in the brain responds when the Carbon dioxide concentration of the blood is changed. The signals are received by the respiratory center to control the movement of respiratory rate and respiratory muscles that includes the diaphragm.

Detailed explanation-2: -The most important function of breathing is the supplying of oxygen to the body and balancing of the carbon dioxide levels. Under most conditions, the partial pressure of carbon dioxide (PCO2), or concentration of carbon dioxide, controls the respiratory rate.

Detailed explanation-3: -The body’s respiratory centre in the medulla is normally stimulated by an increased concentration of carbon dioxide, and to a lesser extent, by decreased levels of oxygen in arterial blood.

Detailed explanation-4: -If the various receptors in the body measure a high level of carbon dioxide (CO2) in the blood, the respiratory center increases the respiratory rate so that the excess CO2 in the alveoli can be released into the air we breathe. If, on the other hand, the CO2 concentration is too low, the respiratory rate is reduced.

Detailed explanation-5: -An increased concentration of carbon dioxide normally stimulates the body’s respiratory center in the medulla, and to a lesser extent, by decreased levels of oxygen in arterial blood.