2006-11-13 02:00:51 · 12 answers · asked by pat rick school 1 in Environment
By having a pooh or wee!
2006-11-13 02:02:45 · answer #1 · answered by benjamin b 3 · 0⤊ 1⤋
Excretion is the process of eliminating waste products of metabolism and other materials that are of no use. It is an essential process in all forms of life. In one-celled organisms wastes are discharged through the surface of the cell. The higher plants eliminate gases through the stomata, or pores, on the leaf surface. They also have been shown (by British biologist Brian J. Ford) to translocate wastes into leaves which are then shed. In this fashion, the leaf, in addition to acting as an energy-trapping structure, is also a plant's organ of excretion.
Multicellular animals have special excretory organs. In humans the main organs of excretion are the kidneys and accessory urinary organs, through which urine is eliminated (see urinary system), and the large intestines, from which solid wastes are expelled. The skin and lungs also have excretory functions: The skin eliminates water and salt in sweat, and the lungs expel water vapor and carbon dioxide." [1]
In mammals, for example, the two major excretory processes are the formation of urine in the kidneys and the formation of carbon dioxide (a human's most abundant metabolic waste) molecules as a result of respiration, which is then exhaled from the lungs.
The waste products are eliminated by urination and exhalation respectively. In urination, Hormone control over excretion occurs in the distal tubules of the kidneys as directed by the hypothalamus.
Perspiration is another excretory process which removes salts and water, although the primary purpose is cooling.
In insects, a system involving Malpighian tubules is utilized to excrete metabolic waste. Metabolic waste diffuses or is actively transported into the tubule, which transports the wastes to the intestines. The metabolic waste is then released from the body along with fecal stuffs.
Many people misuse the term excretion as a sort of euphemism for defecation, and use excrement for feces, but this is medically improper
2006-11-13 02:13:56 · answer #2 · answered by moghusai 4 · 0⤊ 1⤋
Excrete solid-ish wastes, produce urine, breathe out carbon dioxide, sweat out some substances (water and salts). Other animals may get rid of excess salt through special glands.....
If we ingest something that is 'off', contaminated, or disagrees with us in some other way, we may vomit it out rapidly. Diarrhoea also allows to excrete semi-solid waste rapidly.
Great subject!
2006-11-13 02:51:20 · answer #3 · answered by Rozzy 4 · 0⤊ 0⤋
The same way any living thing does, excretes it!
2006-11-13 02:03:16 · answer #4 · answered by SunnyDays 5 · 0⤊ 0⤋
just like humans. They excrete,perperiere an so on.
2006-11-13 02:04:07 · answer #5 · answered by Timdel 2 · 0⤊ 0⤋
same as us excepted they don't use a toilet just **** were they feel like it so remember next time you drink water someting has done it in there ?yak
2006-11-13 02:03:29 · answer #6 · answered by Psycho Dave 4 · 0⤊ 0⤋
poo, wee, vomit...
Surely you knew this?
Or is it just a way of getting lots of people to say poo?
2006-11-13 02:14:34 · answer #7 · answered by Ah! 5 · 0⤊ 0⤋
pretty much the same as us humans, the old no1 and no2s!
2006-11-13 02:03:27 · answer #8 · answered by Robakai 3 · 0⤊ 0⤋
I guess the same way as you do? except they don't use a toilet.
2006-11-13 02:14:33 · answer #9 · answered by hakuna matata 4 · 0⤊ 0⤋
take a dump
2006-11-13 02:02:59 · answer #10 · answered by Anonymous · 0⤊ 0⤋