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1. If a person does not excrete properly then his whole digestive system will get deteriorated. Many a times, it leads to a fatal diseases known a fecal impaction.This is a hardened stool that gets stuck in a human rectum due to longtime constipation.

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2. A nephron is the basic structural and functional unit of the kidney. The name comes from the Greek word ,"nephros" means,"kidney". It's main function is to regulate water and soluble substances through filtration.

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3. There are two sphincter muscles guarding the urethra which are the internal urethral sphincter and the external urethral sphincter. They controls the voluntary and involuntary follow of urine from the bladder to urethra.

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4. Pee,in general don't smell strong . But in case the urine smell strong,it means there the excess of ammonia which marks that one is dehydrated or one is being infect by diabetes,UTIs ,etc.

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