Anatomy

Blood-Air Barrier

The barrier between capillary blood and alveolar air comprising the alveolar EPITHELIUM and capillary ENDOTHELIUM with their adherent BASEMENT MEMBRANE and EPITHELIAL CELL cytoplasm. PULMONARY GAS EXCHANGE occurs across this membrane.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The barrier between capillary blood and alveolar air comprising the alveolar EPITHELIUM and capillary ENDOTHELIUM with their adherent BASEMENT MEMBRANE and EPITHELIAL CELL cytoplasm. PULMONARY GAS EXCHANGE occurs across this membrane.

MeSH Record

Classification

Related Concepts

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MeSH Record

See Also

MeSH Record

Synonyms

13 entry terms
  • Air-Blood Barrier
  • Alveolocapillary Membrane
  • Air Blood Barrier
  • Air-Blood Barriers
  • Alveolocapillary Membranes
  • Barrier, Air-Blood
  • Barrier, Blood-Air
  • Barriers, Air-Blood
  • Barriers, Blood-Air
  • Blood Air Barrier
  • Blood-Air Barriers
  • Membrane, Alveolocapillary
  • Membranes, Alveolocapillary

MeSH Record

Aspects Covered

23 allowable subheadings

Indexed with the subheadings abnormalities, anatomy & histology, 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

coord IM with endogenous substance /metab (IM) or exogenous substance /pharmacokin (IM)

MeSH Record

History Note

90

MeSH Record

Previous Indexing

  • Capillaries (1969-1989)
  • Pulmonary Alveoli (1969-1989)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Blood-Air Barrier. Medical Subject Headings (MeSH). 2026. Unique ID D015824. http://id.nlm.nih.gov/mesh/2026/D015824
  2. Blood-Air Barrier. In: Wikipedia. https://en.wikipedia.org/wiki/Blood%E2%80%93air_barrier
  3. Blood-Air Barrier. In: Wikidata. https://www.wikidata.org/wiki/Q886410