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'''Urine''' is liquid [[biology|biological]] waste excreted by the [[kidney]]s. The [[human]] body produces urine, as do all [[mammals]], [[reptile|reptiles]], [[birds]], [[fish]], and [[amphibian|amphibians]]. Urine is mostly [[water]], and also contains [[urea]], [[creatinine]], waste [[enzymes]] and [[hormone]]s, [[protein]]s, [[carbohydrate]]s and fatty [[acid]]s<ref>[http://www.ivy-rose.co.uk/Topics/Urinary_System_Composition_Urine.php Urinalysis - The composition of Urine]</ref>. Urine also contains large numbers of [[bacteria]], so coming into contact with or ingesting it is unhygienic and can be harmful.

'''Urine''' is liquid [[biology|biological]] waste excreted by the [[kidney]]s. The [[human]] body produces urine, as do all [[mammals]], [[reptile]]s, [[birds]], [[fish]], and [[amphibian]]s. Urine is mostly [[water]], and also contains [[urea]], [[creatinine]], waste [[enzymes]] and [[hormone]]s, [[protein]]s, [[carbohydrate]]s and fatty [[acid]]s.<ref>[http://www.ivy-rose.co.uk/Topics/Urinary_System_Composition_Urine.php Urinalysis - The composition of Urine]</ref> Urine also contains large numbers of [[bacteria]], so coming into contact with or ingesting it is unhygienic and can be harmful.

Sociologically, urine's smell and the potential harm it can cause in terms of infection make it [[taboo]] in many cultures. Urinating on objects [[desecration by urine|is sometimes done]] in order to show extreme disapproval, or to humiliate, although such behavior has no place in civilized society.

Sociologically, urine's smell and the potential harm it can cause in terms of infection make it [[taboo]] in many cultures. Urinating on objects [[desecration by urine|is sometimes done]] in order to show extreme disapproval, or to humiliate, although such behavior has no place in civilized society.

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[[category:anatomy]]

[[Category:Anatomy]]