Human waste
Human Waste
Human waste refers to the waste products that are expelled from a human's body. This includes feces, urine, perspiration, respiration, and semen.
Pronunciation
- /ˈhjuːmən weɪst/
Etymology
The term "human waste" is derived from the Old English "waste", meaning "desolate, waste", and the Latin "humanus", meaning "human".
Feces
Feces (/ˈfiːsiːz/) are the solid or semisolid remains of food that could not be digested in the small intestine. This material is pushed into the colon where it is further broken down by gut bacteria.
Urine
Urine (/ˈjʊərɪn/) is a liquid by-product of metabolism in humans. It is expelled from the kidneys and flows through the ureters to the urinary bladder, from which it is then excreted from the body through the urethra.
Perspiration
Perspiration (/ˌpɜːspɪˈreɪʃən/), also known as sweating, is the production of fluids secreted by the sweat glands in the skin of mammals.
Respiration
Respiration (/ˌrɛspɪˈreɪʃən/) is the process in which organisms exchange gases between their body cells and the environment. In humans, this process is performed by the respiratory system, which includes organs such as the lungs and the diaphragm.
Semen
Semen (/ˈsiːmən/) is an organic fluid that may contain spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize the female ovum.
See Also
External links
- Medical encyclopedia article on Human waste
- Wikipedia's article - Human waste
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