Changes

*[[Mouth]]*[[Oesophagus]]*[[Stomach]]*[[Small Intestine]]*[[Large Intestine]]*[[Rectum]]*[[Anus]]

An [[File:DigestiveSystem.png|right|300px|thumb|A diagram of the '''digestive system'''.]]The '''digestive system''' is an [[Organ System|organ system]] that breaks down food for [[Absorb (Biology)|absorption]] into the [[blood]]. ===About The Digestive System===: The '''digestive system''' breaks down food mechanically and chemically before [[Absorb (biology)|absorbing]] [[nutrient]]s into the [[blood]].: The '''digestive system''' takes large [[insoluble]] [[molecule]]s and breaks them down into small [[soluble]] [[molecule]]s to be [[Absorb (Biology)|absorbed]].There are several [[organ]]s in the '''digestive system''' you should know:*[[Mouth]] - Breaks down food mechanically with [[teeth]] and adds [[saliva]] using the [[Salivary Gland|salivary gland]]s to make food easier to swallow.*[[Oesophagus]] - Uses [[peristalsis]] to move food from the [[mouth]] to the [[stomach]].*[[Stomach]] - Starts chemical [[digestion]] of food in an [[Acid|acidic]] environment.*[[Liver]] - Makes [[bile]] to [[Neutralisation|neutralise]] [[Stomach Acid|stomach acid]] and break down [[fat]].*[[Pancreas]] - Makes [[enzyme]]s to chemically [[Digestion|digest]] food.*[[Small Intestine]] - [[Absorb (biology)|Absorb]]s food into the [[blood]] through [[villi]]*[[Large Intestine]] - [[Absorb (biology)|Absorb]]s water from undigested food called [[faeces]].*[[Rectum]] - Stores [[faeces]] before [[egestion]].*[[Anus]] - A ring of [[muscle]] that holds [[faeces]] in. {| class="wikitable"|+ These are all human organs which may look different in different mammals.|-|[[File:Mouth.png|center|200px]]|[[File:Oesophagus.png|center|200px]]|[[File:Stomach.png|center|200px]] |-| style="height:20px; width:200px; text-align:center;" |The [[mouth]] is an [[organ]] is used to start [[digestion]] of food.| style="height:20px; width:200px; text-align:center;" |The [[oesophagus]] is an [[organ]] that connects the [[mouth]] to the [[stomach]].| style="height:20px; width:200px; text-align:center;" |The [[stomach]] is an [[organ]] that [[digestion|digests]] food. |-|[[File:Liver.png|center|200px]]|[[File:Pancreas.png|center|200px]]|[[File:Intestines.png|center|200px]]|-| style="height:20px; width:200px; text-align:center;" |In the '''digestive system''' the [[liver]] produces [[bile]] which [[Neutralisation|neutralises]] the [[acid]] from the [[stomach]] and helps break down fat.| style="height:20px; width:200px; text-align:center;" |In the '''digestive system''' the [[pancreas]] produces enzymes to chemically break down food.| style="height:20px; width:200px; text-align:left;" |*The [[Small Intestine|small intestine]] [[Absorb (biology)|absorbs]] nutrients.*The [[Large Intestine|large intestine]] [[Absorb (biology)|absorbs]] water.*The [[rectum]] stores [[faeces]].*The [[anus]] holds the [[faeces]] in.|} ==Key Stage 4=====Meaning===[[File:DigestiveSystem.png|right|300px|thumb|A diagram of the '''digestive system'''.]]The '''digestive system''' is an [[Organ System|organ system]] that breaks down food for [[absorbAbsorb (Biology)|absorption]] into the [[blood]]. ===About The Digestive System===: The '''digestive system''' breaks down food mechanically and chemically before [[Absorb (biology)|absorbing]] [[nutrient]]s into the [[blood]].: The '''digestive system''' takes large [[insoluble]] [[molecule]]s and breaks them down into small [[soluble]] [[molecule]]s to be [[Absorb (Biology)|absorbed]].There are several [[organ]]s in the '''digestive system''' you should know:*[[Mouth]] - Breaks down food mechanically with [[teeth]] and adds [[saliva]] using the [[Salivary Gland|salivary gland]]s to [[lubrication|lubricate]] the food for it to be swallowed.*[[Oesophagus]] - Uses [[peristalsis]] to move food from the [[mouth]] to the [[stomach]].*[[Stomach]] - Starts [[Chemical Digestion|chemical digestion]] of food in an [[Acid|acidic]] environment adding a [[protease]] called [[pepsin]] which breaks down [[protein]]s into [[Amino Acid|amino acids]].*[[Liver]] - Makes [[bile]] to [[Neutralisation|neutralise]] [[Stomach Acid|stomach acid]] and [[emulsification|emulsify]] [[fat]].*[[Pancreas]] - Makes [[Digestive Enzyme|digestive enzyme]]s including [[Pancreatic Amylase|pancreatic amylase]], [[trypsin]] (which is a type of [[protease]] and [[lipase]].*[[Small Intestine]] - Continues the [[Chemical Digestion|chemical digestion]] of food using the [[Digestive Enzyme|enzymes]] from the [[pancreas]] as well as producing its own [[amylase]] and [[peptidase]]. It then [[Absorb (biology)|absorb]]s food into the [[blood]] through [[villi]]*[[Large Intestine]] - [[Absorb (biology)|Absorb]]s [[water]] from undigested food called [[faeces]].*[[Rectum]] - Stores [[faeces]] before [[egestion]].*[[Anus]] - A ring of [[muscle]] that holds [[faeces]] in. {| class="wikitable"|+ These are all human organs which may look different in different mammals.|-|[[File:Mouth.png|center|200px]]|[[File:Oesophagus.png|center|200px]]|[[File:Stomach.png|center|200px]] |-| style="height:20px; width:200px; text-align:center;" |The [[mouth]] is an [[organ]] is used to start [[digestion]] of food.| style="height:20px; width:200px; text-align:center;" |The [[oesophagus]] is an [[organ]] that connects the [[mouth]] to the [[stomach]].| style="height:20px; width:200px; text-align:center;" |The [[stomach]] is an [[organ]] that [[digestion|digests]] food. |-|[[File:Liver.png|center|200px]]|[[File:Pancreas.png|center|200px]]|[[File:Intestines.png|center|200px]]|-| style="height:20px; width:200px; text-align:center;" |In the '''digestive system''' the [[liver]] produces [[bile]] which [[Neutralisation|neutralises]] the [[acid]] from the [[stomach]] and helps break down fat.| style="height:20px; width:200px; text-align:center;" |In the '''digestive system''' the [[pancreas]] produces enzymes to chemically break down food.| style="height:20px; width:200px; text-align:left;" |*The [[Small Intestine|small intestine]] [[Absorb (biology)|absorbs]] nutrients.*The [[Large Intestine|large intestine]] [[Absorb (biology)|absorbs]] water.*The [[rectum]] stores [[faeces]].*The [[anus]] holds the [[faeces]] in.|} ==Extra Information=={{#ev:youtube|https://www.youtube.com/watch?v=Og5xAdC8EUI}}