Editing Human body (section)

==== Digestive system ====
{{Main|Digestive system}}
[[File:Digestive system diagram en.svg|left|thumb|Digestive system]]
The [[Human digestive system|digestive system]] consists of the mouth including the [[tongue]] and [[Human tooth|teeth]], [[esophagus]], [[stomach]], ([[gastrointestinal tract]], [[small intestine|small]] and [[large intestine]]s, and [[rectum]]), as well as the [[liver]], [[pancreas]], [[gallbladder]], and [[salivary gland]]s. It converts food into small, nutritional, non-toxic [[molecule]]s for distribution and absorption into the body. These molecules take the form of [[protein]]s (which are broken down into [[amino acid]]s), [[fat]]s, [[vitamin]]s and [[Mineral (nutrient)|minerals]] (the last of which are mainly ionic rather than molecular). After being [[Swallowing|swallowed]], food moves through the [[gastrointestinal tract]] by means of [[peristalsis]]: the systematic expansion and contraction of muscles to push food from one area to the next.<ref>{{Cite web |url=https://www.niddk.nih.gov/health-information/health-topics/Anatomy/your-digestive-system/Pages/anatomy.aspx |title=Your Digestive System and How It Works |publisher=[[National Institute of Health]] |access-date=4 September 2016}}</ref><ref name="niddk.nih.gov">{{cite web |url=https://www.niddk.nih.gov/health-information/digestive-diseases/digestive-system-how-it-works |title=Your Digestive System & How it Works |publisher=[[National Institute of Diabetes and Digestive and Kidney Diseases]] |access-date=29 June 2019}}</ref>

Digestion begins in the [[Human mouth|mouth]], which [[Chewing|chews]] food into smaller pieces for easier digestion. Then it is [[Swallowing|swallowed]], and moves through the [[esophagus]] to the [[stomach]]. In the stomach, food is mixed with [[gastric acid]]s to allow the extraction of [[nutrient]]s. What is left is called [[chyme]]; this then moves into the [[small intestine]], which absorbs the nutrients and water from the chyme. What remains passes on to the [[large intestine]], where it is dried to form [[Human feces|feces]]; these are then stored in the [[rectum]] until they are expelled through the [[Human anus|anus]].<ref name="niddk.nih.gov" />