- in the arteries and also contributes to blood clotting and immune defense.
- Platelets: help stop bleeding by closing wounds and cuts and also play a very important role in blood clotting in case of injury.
The link between red blood cells and blood types:
These red blood cells are also called erythrocytes or red blood cells. They contain hemoglobin, a protein that binds oxygen and gives blood its red color. The membranes of red blood cells carry antigens that determine the different blood groups. There are four blood groups: O,