- z. adherens a beltlike desmosomal attachment between columnar epithelial cells, upon which filaments attach. SYN: intermediate junction.
- z. ciliaris [TA] SYN: ciliary zonule.
- z. occludens tight junctions formed by the fusion of integral proteins of the lateral cell membranes of adjacent epithelial cells, limiting transepithelial permeability. SYN: impermeable junction, tight junction.
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n.
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zo·nu·la (zoґnu-lə) gen. and pl. zoґnulae [L., dim. of zona] a small zone, or zonule.Medical dictionary. 2011.