NEET BIOLOGY

Detailed explanation-1: -CO2 plays various roles in the human body including regulation of blood pH, respiratory drive, and affinity of hemoglobin for oxygen (O2). Fluctuations in CO2 levels are highly regulated and can cause disturbances in the human body if normal levels are not maintained.

Detailed explanation-2: -The most important factor controlling the rate and depth of breathing is the effect of carbon dioxide on the central chemoreceptors. The hydrogen ions stimulate the central chemoreceptors, which send nerve impulses to the respiratory centers in the medulla.

Detailed explanation-3: -Carbon Dioxide and Hydrogen Ions (H+) in the blood control breathing rate. CO2 will build up in the blood due to cellular respiration, increasing the concentration to a threshold level. Chemoreceptors in the aorta and carotid arteries detect this and signal the breathing centre in the medulla oblongata.

Detailed explanation-4: -Carbon dioxide and health Carbon dioxide is essential for internal respiration in a human body. Internal respiration is a process, by which oxygen is transported to body tissues and carbon dioxide is carried away from them.