EVERYDAY SCIENCE

Detailed explanation-1: -Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.

Detailed explanation-2: -Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate. The majority of carbon dioxide is transported as part of the bicarbonate system.

Detailed explanation-3: -Introduction. The hemoglobin (Hb) molecule within the red blood cell (RBC) carries oxygen from the lungs to the tissues, transports carbon dioxide from tissues back to lungs, and helps maintain acid–base balance.

Detailed explanation-4: -A protein called haemoglobin in the red blood cells then carries the oxygen around your body. At the same time, carbon dioxide that is dissolved in the blood comes out of the capillaries back into the air sacs, ready to be breathed out.

Detailed explanation-5: -Pulmonary artery is the only artery that carries carbon dioxide rich blood to lungs for re-oxygenation. Since pulmonary artery carries blood away from the heart, it is called artery and not a vein.