Excretion is this process of removal of wastes that are produced within a body. There are various organs that help in excretion of such wastes from our body.

The circulatory system is the “transportation system” for the body, and blood serves as the transport vehicle.

The lymphatic system, or lymphoid system, is an organ system in vertebrates that is part of the immune system, and complementary to the circulatory system.

Excretion is the removal of the waste substances of metabolic reactions, toxic materials and substances in excess of requirements. Metabolic wastes produced by the human body include: Carbon..