Capillaries: These are tiny blood vessels that connect arteries and veins. They allow for the exchange of oxygen, nutrients, and waste products between the bloodstream and surrounding tissues.
Hemoglobin: It is a protein present in red blood cells that binds with oxygen molecules to carry them from the lungs to other parts of the body.
Platelets: Small cell fragments in our blood that play a crucial role in clotting and preventing excessive bleeding when we get injured.