Anatomy

Abomasum

The fourth stomach of ruminating animals. It is also called the true stomach. It is an elongated pear-shaped sac lying on the floor of the abdomen, on the right-hand side, and roughly between the seventh and twelfth ribs. It leads to the beginning of the small intestine. (From Black's Veterinary Dictionary, 17th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The fourth stomach of ruminating animals. It is also called the true stomach. It is an elongated pear-shaped sac lying on the floor of the abdomen, on the right-hand side, and roughly between the seventh and twelfth ribs. It leads to the beginning of the small intestine. (From Black's Veterinary Dictionary, 17th ed)

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

Synonyms

1 entry terms
  • Abomasums

MeSH Record

Aspects Covered

24 allowable subheadings

Indexed with the subheadings abnormalities, anatomy & histology, blood supply, chemistry, cytology, diagnostic imaging, drug effects, embryology, enzymology, growth & development, immunology, injuries, innervation, metabolism, microbiology, parasitology, pathology, physiology, physiopathology, radiation effects, surgery, transplantation, ultrastructure, virology.

MeSH Record

Indexing Annotation

a ruminant's 4th stomach; dis: coord IM with STOMACH DISEASES /vet (IM); neopl: coord IM with STOMACH NEOPLASMS /vet (IM) + histol type /vet (IM); ulcer: coord IM with STOMACH ULCER /vet (IM)

MeSH Record

History Note

68

MeSH Record

Previous Indexing

  • Stomach (1966-1967)

MeSH Hierarchy

Tree Number

  1. A13.869.106w

AMA Style

References

  1. National Library of Medicine. Abomasum. Medical Subject Headings (MeSH). 2026. Unique ID D000018. http://id.nlm.nih.gov/mesh/2026/D000018
  2. Abomasum. In: Wikipedia. https://en.wikipedia.org/wiki/Abomasum
  3. Abomasum. In: Wikidata. https://www.wikidata.org/wiki/Q27004