Hemoglobin
Hemoglobin: Hemoglobin is a protein in red blood cells that binds oxygen in the lungs and releases it in tissues, playing a vital role in respiration and giving blood its red color.
Tag Archives: oxygen transport
Shape of Red Blood Cells
Shape of Red Blood Cells: Red blood cells are biconcave discs, a shape that increases surface area for gas exchange and allows flexibility to navigate narrow capillaries.