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Excretion

For discussing the functions of different structures of all organisms.

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Excretion

Postby Aerlinn » Wed Nov 16, 2005 8:27 am

The wastes of metabolism is excretion, right? And not egestion?
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Postby chetanladdha » Wed Nov 16, 2005 8:36 am

no,, its egestion only
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Postby Aerlinn » Wed Nov 16, 2005 9:04 am

Now I'm confused. I'm sure it's excretion, not egestion. Isn't egestion the removal of unwanted food substances from the body?
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Postby siya » Wed Nov 16, 2005 11:59 am

yeah!excretion is removal of metabolic waste.egestion is removal of unigested food particle.no question of metbolism here.
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Postby MrMistery » Wed Nov 16, 2005 7:21 pm

not quite. some insects eliminate uric acid crystals through their intestine. Almost all insects actually... This is because of some structures named Malpighi tubes.
And there are other exceptions like that.
But generally, you got it.
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Postby biostudent84 » Fri Nov 18, 2005 12:38 pm

Feces is the excretion of undigested food from the digestive tract.

Urine is the excretion of metabolic waste from the urine tract (which recieved the waste from the cardiovascular system).
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Postby Dr.Stein » Fri Nov 25, 2005 7:23 am

Egestion - from GI tract, waste of digestion
Excretion - other than digestive system
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Postby victor » Fri Nov 25, 2005 1:58 pm

Dr.Stein wrote:Egestion - from GI tract, waste of digestion
Excretion - other than digestive system


What do you mean GI? is it Gastro-intestinal?
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Postby Dr.Stein » Sat Nov 26, 2005 7:59 am

Yup or digestive tracts (tractus digestivus) ;)
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Postby anmol » Mon Nov 28, 2005 10:43 am

biostudent84 wrote:Feces is the excretion of undigested food from the digestive tract.

Urine is the excretion of metabolic waste from the urine tract (which recieved the waste from the car :oops: diovascular system).

kidneys filter our blood
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Postby JB » Mon Dec 26, 2005 12:37 am

Ammonia is toxic and must be turned to urea by combining with CO2!
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Postby victor » Mon Dec 26, 2005 12:51 pm

or could be dehydrogenated and get combined with some carboxylic acid to form amino acid?? :mrgreen:
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