MICROANATOMY

Detailed explanation-1: -Red blood cells, also known as erythrocytes, deliver oxygen to the tissues in your body. Oxygen turns into energy and your tissues release carbon dioxide. Your red blood cells also transport carbon dioxide to your lungs for you to exhale.

Detailed explanation-2: -More specifically, though, it’s the hemoglobin in red blood cells. Hemoglobin contains iron, which allows it to pick up oxygen from the air we breathe and deliver it everywhere in the body. You can think of hemoglobin as the iron ("heme"), oxygen transport protein, ("globin") found in red blood cells.

Detailed explanation-3: -Red blood cells, or erythrocytes, are one of the components of blood. (The others are plasma, platelets and white blood cells.) They are continuously produced in our bone marrow.