Anatomy

Germ Layers

The three primary germinal layers (ECTODERM; ENDODERM; and MESODERM) developed during GASTRULATION that provide tissues and body plan of a mature organism. They derive from two early layers, hypoblast and epiblast.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The three primary germinal layers (ECTODERM; ENDODERM; and MESODERM) developed during GASTRULATION that provide tissues and body plan of a mature organism. They derive from two early layers, hypoblast and epiblast.

MeSH Record

Classification

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MeSH Record

Synonyms

7 entry terms
  • Germ Layer
  • Layer, Germ
  • Layers, Germ
  • Epiblast
  • Hypoblast
  • Epiblasts
  • Hypoblasts

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 Hierarchy

Tree Number

  1. A16.504w

AMA Style

References

  1. National Library of Medicine. Germ Layers. Medical Subject Headings (MeSH). 2026. Unique ID D005855. http://id.nlm.nih.gov/mesh/2026/D005855
  2. Germ Layers. In: Wikipedia. https://en.wikipedia.org/wiki/Germ_layer
  3. Germ Layers. In: Wikidata. https://www.wikidata.org/wiki/Q660498