EVERYDAY SCIENCE

Detailed explanation-1: -When there is a decrease in the concentration of oxygen in the blood, the breathing rate increases. Breathing rate and breathing volume increase, the blood pressure increases, the heart rate increases, and kidney bicarbonate production ( in order to buffer the effects of blood acidosis), occur.

Detailed explanation-2: -If the levels of carbon dioxide or hydrogen ions increase, the chemoreceptors relay this information to the respiratory areas. As a result, the rate and depth of breathing increase and more carbon dioxide is exhaled. When the levels decline to a more normal range, breathing rate decreases to normal.

Detailed explanation-3: -Final Answer: When CO2 concentration in blood increases breathing becomes faster and deeper.

Detailed explanation-4: -The air inhaled carries oxygen, which increases oxygen concentration in blood, which circulates throughout the body. While returning back to the lungs, the carbon dioxide levels in the blood go up, thus expelling it from the lungs, and outside into the air.

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.