Human[r]: Bipedal mammalian species native to most continents and sharing a common ape ancestor with chimpanzees, gorillas and orang-utans; notable for evolving language and adapting its habitat to its own needs. [e]
Morphology[r]: The study of biological structure. [e]
Urinary tract[r]: Also known as the renal system, it is in the lower half of the body and includes the kidneys, two ureters, the bladder and the uretha. Its main purpose is to provide the means by which urine is drained from the body. It is also significant in the regulation of blood pressure and in the control of electrolytes. [e]