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: The [[liver]] is the largest internal [[organ]].
: The [[liver]] takes toxic chemicals out of the blood.
==Key Stage 4==
===Meaning===
The [[liver]] is an [[organ]] used to [[Detoxification|detoxify]] [[blood]] and to produce [[bile]] to aid the [[digestion]] of [[lipid]]s.
===About The Human Liver===
: When [[muscle]]s do not get enough [[Oxygen]] during exercise they break [[glucose]] down into [[Lactic Acid|lactic acid]] for [[energy]]. The [[liver]] removes this [[toxic]] [[Lactic Acid|lactic acid]] from the [[blood]] by converting it back into [[glucose]].
: The [[liver]] clears dead [[Red Blood Cell|red blood cells]] and breaks them down into [[bile]] which is stored in the [[Gall Bladder|gall bladder]]. The [[bile]] is then used to [[emulsify]] [[lipid]]s which increases their surface area making them easier to [[Chemical Digestion|chemically digest]].
: When food is [[Absorb (Biology)|absorbed]] into the [[blood]] it goes through the [[Hepatic Portal Vein|hepatic portal vein]] straight to the [[liver]] which removes [[toxin]]s from the [[blood]] before it is sent to the rest of the body.