Simple columnar epithelium - terminal web
(100x objective lens)
The terminal web
(arrow), visualized as a dark line at
the apex of each of the columnar cells, marks the location of a thick layer
of cytoskeletal actin filaments located at the base of the brush border of
microvilli. Some of the filaments in this layer are associated with the apical
junctional complex that holds the cells together and some extend into the
layer from the microvilli, which contain a core of actin microfilaments.
