| a linkage of two adjacent cells consisting of a system of channels extending across a gap from one cell to the other, allowing the passage of ions and small molecules. |
| gap junction n. An intercellular network of protein channels that facilitates the cell-to-cell passage of ions, hormones, and neurotransmitters. |
gap junction n.
A gap between adjacent cell membranes containing very fine latticelike connections that allow physiologic components to pass directly from cell to cell. Also called nexus.
