Body Space or Junction
sinusoid Audio
si·nus·oid [ sahy-nuh-soid ]
Etymology:
Latin sinus = a bay or hollow + Greek eidos = resemblance
Definitions related to sinusoid:
  • Segment of blood vessel tree organ, each instance of which consists of some large, irregular anastomosing vessel, having a lining of some reticuloendothelium but with little or no adventitia; sinusoids are found in some liver, adrenals, heart, parathyroid, carotid gland, spleen, and pancreas.
    Foundational Model of Anatomy
    University of Washington, 2017
  • (discontinuous capillary) Narrow blood vessels found in the liver, spleen and bone marrow with gaps rather than tight junctions between endothelial cells creating a highly permeable surface.
    NCI
    U.S. National Cancer Institute, 2021
  • Sinusoid, irregular tubular space for the passage of blood, taking the place of capillaries and venules in the liver, spleen, and bone marrow. The sinusoids form from branches of the portal vein in the liver and from arterioles (minute arteries) in other organs. The walls of the sinusoids are...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2025
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