Body Space or Junction
extracellular space
ex·tra·cel·lu·lar space [ ek-struh-sel-yuh-ler speys ]
Subclass of:
Body Fluid Compartments; Cellular Structures
Definitions related to extracellular space:
  • Interstitial space between cells, occupied by INTERSTITIAL FLUID as well as amorphous and fibrous substances. For organisms with a CELL WALL, the extracellular space includes everything outside of the CELL MEMBRANE including the PERIPLASM and the cell wall.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.