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===Meaning===
[[File:ExcretorySystem.png|right|300px|thumb|A [[diagram]] of the '''excretory system'''.]]
The '''excretory system''' is an [[Organ System|organ system]] in [[animal]]s that removes the waste products [[urea]] from the [[Cell (Biology)|cellsblood]].
===About the Excretory System===
: Some of the waste produced by [[Cell (Biology)|cellsUrea]] are is [[toxic]] to [[Cell (Biology)|cells]] so the '''excretory system''' also removes [[toxic|toxins]] is essential to remove it from the [[blood]].
: The '''excretory system''' is made of the following parts:
:*The [[Kidney]]s - Which filter the [[blood]] to remove waste[[urea]].
:*The [[Ureter]]s - Tubes which transport [[urine]] from the [[kidney]]s to the [[bladder]].
:*The [[Bladder]] - Where [[urine]] is stored before being released.
===About the Excretory System===
: Some of the waste produced by [[Cell (Biology)|cellsUrea]] are is [[toxic]] to [[Cell (Biology)|cells]] so the '''excretory system''' also removes [[toxic|toxins]] is essential to remove it from the [[blood]].
: The '''excretory system''' is made of the following parts:
:*The [[Kidney]]s - Which filter the [[blood]] to remove waste[[urea]], excess [[water]] (for [[Osmoregulation]]) and [[salt]].
:*The [[Ureter]]s - Tubes which transport [[urine]] from the [[kidney]]s to the [[bladder]].
:*The [[Bladder]] - Where [[urine]] is stored before being released.
:*The [[Urethra]] - A tube to allow [[urine]] to be released from the [[bladder]].