Veins are large return vessels of the body which carry blood to the heart. They can be considered as blood return counterparts of arteries. Nerves are bundles of axons constituting the peripheral nervous...

Red Blood Cells (RBCs) and White Blood Cells (WBCs) are main components of blood. RBCs are also known as erythrocytes. WBCs are known as Leukocytes. Unlike WBC, Mature RBCs do not have a nucleus. They both...