Anatomy

Gastrula

The developmental stage that follows BLASTULA or BLASTOCYST. It is characterized by the morphogenetic cell movements including invagination, ingression, and involution. Gastrulation begins with the formation of the PRIMITIVE STREAK, and ends with the formation of three GERM LAYERS, the body plan of the mature organism.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The developmental stage that follows BLASTULA or BLASTOCYST. It is characterized by the morphogenetic cell movements including invagination, ingression, and involution. Gastrulation begins with the formation of the PRIMITIVE STREAK, and ends with the formation of three GERM LAYERS, the body plan of the mature organism.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

11 entry terms
  • Gastrulas
  • Archenteron
  • Blastopore
  • Gastrocoele
  • Primitive Gut
  • Archenterons
  • Blastopores
  • Gastrocoeles
  • Gut, Primitive
  • Guts, Primitive
  • Primitive Guts

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

History Note

80

MeSH Record

Previous Indexing

  • specific organism/EM (1966-1979)

MeSH Hierarchy

Tree Number

  1. A16.441w

AMA Style

References

  1. National Library of Medicine. Gastrula. Medical Subject Headings (MeSH). 2026. Unique ID D005775. http://id.nlm.nih.gov/mesh/2026/D005775
  2. Gastrula. In: Wikipedia. https://en.wikipedia.org/wiki/Gastrula
  3. Gastrula. In: Wikidata. https://www.wikidata.org/wiki/Q1773763