Question

The respiratory centre leading to faster breathing is on account of ________________.

• A. Venous blood entering the respiratory centre
• B. Arterial blood entering respiratory centre
• C. Venous blood leaving the respiratory centre
• D. Arterial blood leaving the respiratory centre

Answer 1

The correct option is A Venous blood entering the respiratory centre

The medulla oblongata is the primary respiratory control centre. Its main function is to send signals to the muscles that control respiration to cause breathing to occur. The respiratory control centre increase respiratory rate on the account of decrease in blood pH, as the oxygenated blood through veins enter the system, decrease in $C{O}_2$ levels, increased respiratory rate.