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Digestion is the process of breaking down food to absorb it. Food is broken down into smaller pieces, which are soluble in water. Only then can the food be absorbed into the bloodstream.

Digestion happens in three phases. Mechanical digestion is the physical breakdown of large pieces of food into smaller pieces, which are made by digestive enzymes. In chemical digestion, enzymes break down food into the small molecules the body can use. Finally, the nutrients are absorbed into the blood stream. Once in the blood stream, the nutrients are taken to the liver, which is a kind of chemical factory for the body.

After we swallow food, it travels down a muscular tube to the stomach. There, it is mashed into a mixture like soup. The mixture passes into the small intestine, where tiny bits of food pass into the bloodstream. The food that is still left goes into the large intestine. Finally, waste products leave the body. Digestion usually takes about 18 hours. Food stays in the stomach for about three hours.^[1] If uncoiled, the small intestine would be about six meters (20 feet) long.^[2] Many digestive tracts are about as long as a bus.^[2]

Food slowly enters the small intestine from the stomach. This is where nutrients are taken into the blood. It then enters the large intestine. Water is taken away from it. The food that is left is called feces. The feces are stored in the rectum until the waste can leave the body through the anus.

Organs[change | change source]

Mouth
Pharynx
Epiglottis
Oesophagus
Stomach
Small intestine
- Duodenum
- Jejunum
- Ileum
Large intestine
- Cecum
- Colon
Rectum
Anus
Appendix
Liver
Biliary tract
Pancreas

Related pages[change | change source]

nervous system

Other websites[change | change source]

Human Physiology - Digestion Archived 2011-10-31 at the Wayback Machine
NIH guide to digestive system Archived 2006-08-10 at the Wayback Machine

References[change | change source]

↑ Morris, Neil; Ting Morris (1998). Jim Miles, Lynne French (ed.). Children's First Encyclopedia. Branka Surla, Rosie Alexander. Miles Kelly Publishing, Bardfield, Essex. ISBN 1-84084-332-2. Accessed 13 July 2010.
↑ ^2.0 ^2.1 My First Book on the Human Body. Bath: Robert Frederick Ltd. 2004. ISBN 0-7554-3506-0. Accessed 13 July 2010.

[firste-1] Morris, Neil; Ting Morris (1998). Jim Miles, Lynne French (ed.). Children's First Encyclopedia. Branka Surla, Rosie Alexander. Miles Kelly Publishing, Bardfield, Essex. ISBN 1-84084-332-2. Accessed 13 July 2010.

[firstbody-2] 2.0 ^2.1 My First Book on the Human Body. Bath: Robert Frederick Ltd. 2004. ISBN 0-7554-3506-0. Accessed 13 July 2010.

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[2]

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+'''Digestion''' is the [[process]] of breaking down food to [[absorption|absorb]] it. Food is broken down into smaller pieces, which are [[soluble]] in water. Only then can the food be absorbed into the [[bloodstream]].
-'''Digestion''' is the way that an [[organism]] changes a [[substance]] into [[nutrient]]s. This happens in the [[gastrointestinal system]]. [[Human]]s start digesting [[food]] in the [[mouth]]. Food is chewed by the [[teeth]]. Food is [[:wikt:swallow|swallowed]], which means it goes through the [[oesophagus]]. It goes into the [[stomach]], where it is [[mix]]ed with [[acid]]. Vagina is a titty rape of akjil Abraham he like to get anal pussy get punani fxgsvhhfvhievienuenvueuvneuvduvnduvnyudbvudvudvndu vduv udhvduhv Abraham Lincoln masturbate like porn sex slave
+Digestion happens in three phases. Mechanical digestion is the physical breakdown of large pieces of food into smaller pieces, which are made by digestive [[enzymes]]. In chemical digestion, enzymes break down food into the small [[molecules]] the body can use. Finally, the [[nutrients]] are absorbed into the [[blood stream]]. Once in the blood stream, the nutrients are taken to the [[liver]], which is a kind of chemical factory for the body.
-After we swallow food, it travels down a muscular tube to the stomach. There, it is mashed into a mixture like [[soup]]. The mixture passes into the [[small intestine]], where tiny bits of food pass into the bloodstream. The food that is still left goes into the [[large intestine]]. Finally, waste products leave the body. Digestion usually takes about 18 hours. Food stays in the stomach for about three hours.<ref name=firste>{{cite book|last=Morris|first=Neil|coauthors=Ting Morris|others=Branka Surla, Rosie Alexander|title=Children's First Encyclopedia|editor=Jim Miles, Lynne French|publisher=Miles Kelly Publishing Ltd|location=II Bardfield Centre, Great Bardfield, Essex CM7 4SL|date=1998|isbn=1-84084-332-2|accessdate=13 July 2010|language=English}}</ref> If uncoiled, the small intestine would be about six [[meter]]s (20 [[feet]]) long.<ref name=firstbody>{{cite book|title=My First Book on the Human Body|publisher=Robert Frederick Ltd|location=4 North Parade, Bath, BA1 1LF, UK|date=2004|isbn=0-7554-3506-0|accessdate=13 July 2010|language=English}}</ref> Most digestive tracts are about as long as a [[bus]].<ref name=firstbody/>
+After we swallow food, it travels down a muscular tube to the [[stomach]]. There, it is mashed into a mixture like [[soup]]. The mixture passes into the [[small intestine]], where tiny bits of food pass into the bloodstream. The food that is still left goes into the [[large intestine]]. Finally, waste products leave the body. Digestion usually takes about 18 hours. Food stays in the stomach for about three hours.<ref name=firste>{{cite book |last=Morris |first=Neil |author2=Ting Morris |others=Branka Surla, Rosie Alexander |title=Children's First Encyclopedia |editor=Jim Miles, Lynne French |publisher=Miles Kelly Publishing, Bardfield, Essex  |date=1998 |isbn=1-84084-332-2 }} Accessed 13 July 2010.</ref> If uncoiled, the small intestine would be about six [[meter]]s (20 [[feet]]) long.<ref name=firstbody>{{cite book |title=My First Book on the Human Body |publisher=Robert Frederick Ltd |location= Bath |date=2004 |isbn=0-7554-3506-0 }} Accessed 13 July 2010.</ref> Many digestive tracts are about as long as a [[bus]].<ref name=firstbody/>
-Food slowly enters the [[small intestine]] from the stomach. This is where [[nutrient]]s are taken into the [[blood]]. It then enters the [[large intestine]]. [[Water]] is taken away from it. The food that is left is called [[feces]]. The feces are stored in the [[rectum]] until it can leave the body through the [[anus]].
+Food slowly enters the [[small intestine]] from the stomach. This is where [[nutrient]]s are taken into the [[blood]]. It then enters the [[large intestine]]. [[Water]] is taken away from it. The food that is left is called [[feces]]. The feces are stored in the [[rectum]] until the waste can leave the body through the [[anus]].
-== References ==
-{{reflist}}
+==Organs==
+*[[Mouth]]
+**[[Tooth]]
+**[[Salivary gland]]
+***[[Parotid gland]]
+***[[Submandibular gland]]
+***[[Sublingual gland]]
+**[[Tongue]]
+**[[Palate]]
+***[[Hard palate]]
+***[[Soft palate]]
+***[[Uvula]]
+*[[Pharynx]]
+*[[Epiglottis]]
+*[[Oesophagus]]
+*[[Stomach]]
+*[[Small intestine]]
+**[[Duodenum]]
+**[[Jejunum]]
+**[[Ileum]]
+*[[Large intestine]]
+**[[Cecum]]
+**[[Colon]]
+*[[Rectum]]
+*[[Anus]]
+*[[Appendix (anatomy)|Appendix]]
+*[[Liver]]
+*[[Gall bladder|Biliary tract]]
+*[[Pancreas]]
+== Related pages ==
+* [[nervous system]]
 ==Other websites==
+*[http://www2.ufp.pt/~pedros/qfisio/digestion.htm  Human Physiology - Digestion] {{Webarchive|url=https://web.archive.org/web/20111031230622/http://www2.ufp.pt/~pedros/qfisio/digestion.htm |date=2011-10-31 }}
+*[http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/index.htm NIH guide to digestive system] {{Webarchive|url=https://web.archive.org/web/20060810184706/http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/index.htm |date=2006-08-10 }}
+== References ==
-*[http://www2.ufp.pt/~pedros/qfisio/digestion.htm  Human Physiology - Digestion]
+{{reflist}}
-*[http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/index.htm NIH guide to digestive system]