stomach

The stomach is a muscular, hollow organ in the upper gastrointestinal tract of humans and many other animals, including several invertebrates. The Ancient Greek name for the stomach is gaster which is used as gastric in medical terms related to the stomach. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach is involved in the gastric phase of digestion, following the cephalic phase in which the sight and smell of food and the act of chewing are stimuli. In the stomach a chemical breakdown of food takes place by means of secreted digestive en

AI overview

The stomach is a muscular, hollow organ in your upper digestive tract that plays a vital role in breaking down food through chemical processes. It receives food after you chew it and uses secreted digestive enzymes to begin the chemical breakdown of what you've eaten, making it possible for your body to absorb nutrients.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name: Stomach
Anatomy.Latin: ventriculus, stomachus
Anatomy.Greek: στόμαχος (stómakhos)
Anatomy.Image: File:Gray1046.svg
Anatomy.Caption: Sections of the human stomach
Anatomy.Image2: Tractus intestinalis ventriculus.svg
Anatomy.Caption2: Scheme of digestive tract, with stomach in red
Anatomy.Precursor: Foregut
Anatomy.System: Digestive system
Anatomy.Artery: Right gastric artery, left gastric artery, right gastro-omental artery, left gastro-omental artery, short gastric arteries
Anatomy.Vein: Right gastric vein, left gastric vein, right gastroepiploic vein, left gastroepiploic vein, short gastric veins
Anatomy.Nerve: Celiac ganglia, vagus nerve
Anatomy.Lymph: Celiac lymph nodes

via Wikipedia infobox

Research

331,352 papers

Gastric acid and digestive physiology.ReviewThe Surgical clinics of North America · 2011Ramsay PT, Carr ADOI: 10.1016/j.suc.2011.06.010
Stomach and colonic microbiome of wild Japanese macaques.American journal of primatology · 2021Lee W, Hayakawa T, Kurihara Y et al.DOI: 10.1002/ajp.23242
Stomach at the crossroads: nuclear receptor signaling at the interface between what we are and what we eat.ReviewPhysiological reviews · 2026Divenko M, Mills JCDOI: 10.1152/physrev.00033.2025
Biochemistry of fish stomach chitinase.ReviewInternational journal of biological macromolecules · 2017Ikeda M, Kakizaki H, Matsumiya MDOI: 10.1016/j.ijbiomac.2017.03.118
Butterflies in your stomach? Not an issue for nearly 8000 species of fishes.Trends in genetics : TIG · 2024German DPDOI: 10.1016/j.tig.2024.07.002
SoRSS: A Soft Robot for Bio-Mimicking Stomach Anatomy and Motility.Soft robotics · 2023Hashem R, Kazemi S, Stommel M et al.DOI: 10.1089/soro.2021.0202
Endoscopic sleeve gastroplasty: stomach location and task classification for evaluation using artificial intelligence.International journal of computer assisted radiology and surgery · 2024Dials J, Demirel D, Sanchez-Arias R et al.DOI: 10.1007/s11548-023-03054-2
Anatomical description of neornithine stomach with implications on neornithine stomach morphology.Journal of anatomy · 2024Takasaki R, Kobayashi YDOI: 10.1111/joa.14123

via PubMed

Wikidata facts

Image: Mammalian Stomachs remake.png

Show 5 more facts

Commons category: Stomachs
Commons gallery: Stomach
NCI Thesaurus ID: C12391
WordLift URL: data.medicalrecords.com/medicalrecords/healthwise/stomach
ground level 360 degree view URL: www.zygotebody.com/#nav=1.46,112.52,126.69,0,0,0,0&sel=p:;h:;s:1225;c:-0.6;o:-0.75&layers=0,1,5000

Sources (9)

via Wikidata · CC0

~26 min read

Article

26 sections

Contents

Structure
Sections
Anatomical proximity
Blood supply
Lymphatic drainage
Microanatomy
Wall
Glands
Gene and protein expression
Development
Function
Digestion
Mechanical digestion
Chemical digestion
Absorption
Control of secretion and motility
Other
Clinical significance
Diseases
Surgery
Etymology
Other animals
Additional images
See also
References
External links

The stomach is located between the esophagus and the small intestine. The pyloric sphincter controls the passage of partially digested food (chyme) from the stomach into the duodenum, the first and shortest part of the small intestine, where peristalsis takes over to move this through the rest of the intestines.