Urine

Urine is liquid waste excreted by the kidneys and eventually expelled from the body in a process known as urination. Most commonly the excretion of urine serves for flushing waste molecules collected from the blood by the kidneys, and for the homeostasis of the body liquids; however, many species also use it for olfactory communication.

Related Topics:
Excreted - Kidney - Urination - Blood - Homeostasis - Olfactory - Communication

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