paracellular pathway
paracellular pathway The route between cells. For example, substances can travel through epithelia by a paracellular pathway if the tight junctions between constituent cells are not fully continuous (i.e. ‘leaky’), as in the proximal tubule of a kidney nephron. Paracellular pathways lack any means of active transport, and substances can only move passively by simple diffusion. Compare transcellular pathway.
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Protoplasm , pro·to·plasm / ˈprōtəˌplazəm/ • n. Biol. the colorless material comprising the living part of a cell, including the cytoplasm, nucleus, and other org… Max Johann Sigismund Schultze , Schultze, Max Johann Sigismund
SCHULTZE, MAX JOHANN SIGISMUND
(b. Freiburg im Breisgau, Germany, 25 March 1825; d. Bonn Germany, 16 January 1874)
ana… Epithelium , Epithelium is a tissue composed of sheets of cells that are joined together in one or more layers. Epithelia cover the body surface, line body caviti… Tight Junction , tight junction A region of the cell surface, of variable size, and situated just below the apical border where the membranes of adjacent cells are fu… Cytoplasmic Streaming , cytoplasmic streaming The directional movement of cytoplasm in certain cells, which allows movement of substances through the cell, especially around… Cell , Cell
The cell is the basic unit of a living organism. In multicellular organisms (organisms with more than one cell), a collection of cells that work…
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paracellular pathway