transcellular pathway
transcellular pathway The route through cells. Substances moving across epithelia are mostly forced to pass through the epithelial cells, rather than passing between the cells (the paracellular pathway). This means that both the mucosal surface (facing the exterior) and the serosal surface (facing the interior) of the cells can act as ‘gatekeepers’, keeping out certain substances, while transporting others from one side to another, often against a concentration gradient.
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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… Transport , Transport is the controlled movement of substances from one part of a cell to another, or from one side of a cell membrane to the other. Because each… T Cell , T cell
T cell (T lymphocyte) Any of a population of lymphocytes that are the principal agents of cell-mediated immunity. T cells are derived from the… Endocytosis , The ability to internalize material from outside the cell is important for several cellular processes including the ingestion of essential nutrients,… Plasma Membrane , Plasma membranes envelop all plant and animal cells and all single-celled eukaryotes and prokaryotes , separating them from their environments. Struc… 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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transcellular pathway