Which of the following is most responsible for the movement of blood to the lungs?

Options

A. The increase of `CO_(2)` content in the inhaled air
B. The increase of `CO_(2)` content in the exhaled air
C. The decrease of `O_(2)` content in the inhaled air
D. The decrease of `O_(2)` content in the exhaled air

Answer

A

Explanation

Carbon dioxide is the most potent influence over the operation. The blood level of `CO_(2)` out directly on the respiratory center in the medulla and is a major impact on cerebrospinal fluid pH arise in `PCO_(2)` decreases the pH level of cerebrospinal fluid this excite the central chemoreceptors results in an increase in the depth and rate of respiration the resulting increase in alveoli ventilation flushes carbon dioxide out of the blood which increases blood pH.