Organisms

Urochordata

A subphylum of chordates intermediate between the invertebrates and the true vertebrates. It includes the Ascidians.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A subphylum of chordates intermediate between the invertebrates and the true vertebrates. It includes the Ascidians.

MeSH Record

Classification

Broader headings

Narrower headings

Related Concepts

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MeSH Record

Synonyms

12 entry terms
  • Tunicata
  • Tunicates
  • Urochordates
  • Tunicate
  • Urochordate
  • Ascidia
  • Ascidiacea
  • Ascidians
  • Sea Squirts
  • Ascidian
  • Sea Squirt
  • Squirt, Sea

MeSH Record

Aspects Covered

18 allowable subheadings

Indexed with the subheadings anatomy & histology, chemistry, classification, cytology, drug effects, embryology, enzymology, genetics, growth & development, immunology, metabolism, microbiology, parasitology, pathogenicity, physiology, radiation effects, ultrastructure, virology.

MeSH Record

History Note

2020(1973); was UROCHORDATA 1999-2019

MeSH Record

Previous Indexing

  • Chordata (1966-1972)

MeSH Hierarchy

Tree Numbers

  1. B01w.050w.150w.200.727
  2. B01w.050w.500w.272.727

AMA Style

References

  1. National Library of Medicine. Urochordata. Medical Subject Headings (MeSH). 2026. Unique ID D014561. http://id.nlm.nih.gov/mesh/2026/D014561
  2. Urochordata. In: Wikidata. https://www.wikidata.org/wiki/Q39256712