ANATOMY

Detailed explanation-1: -So when the muscle is working during exercise, the amount of oxygen the muscle utilizes can be increased by almost 15 times. Red blood cells carry the oxygen that muscles and other cells need during exercise.

Detailed explanation-2: -The main function of red blood cells in exercise is the transport of O2 from the lungs to the tissues and the delivery of metabolically produced CO2 to the lungs for expiration.

Detailed explanation-3: -Haemoglobin molecules inside red blood cells pick up and carry the oxygen. These oxygen-rich cells travel in the blood vessels from the lungs to the left side of the heart. The blood is then pumped around the body.

Detailed explanation-4: -Like other tissues, skeletal muscles rely on a continuous supply of oxygen at a rate which is precisely matched to changing metabolic requirements.

Detailed explanation-5: -Most oxygen in the blood is bound to hemoglobin, while a minimal amount dissolves in plasma water. Furthermore, the oxygen-carrying capacity of hemoglobin is empirically determined to be 1.34 mL O2 / g Hbg.