Tag

Hemoglobin carries Oxygen Breathing correctly is important to the oxygen (O2) transfer from our blood to our muscles and organs. Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body’s tissues and returns carbon dioxide from the tissues back to the lungs The air we breathe contains 21% oxygen. The O2 saturation (SpO2) in the blood of a healthy individual, which is