Human excretory system performs a function of removing the waste from human body. Human excretory system is made up of specialized structures and capillary networks that are used to assist in the excretory process. It includes kidneys and their function unit that is known as a nephron. The excretory activity performed by the kidneys is regulated by specialized hormones that modulate the absorption within nephron.
DNA or deoxyribonucleic acid is known to be the master molecule of every cell. It is the carrier of important information that is passed on from one generation to another and so on. Cell dies if it is destroyed.