In Vivo and Cadaver Studies of the Canalicular/Lacrimal Sac Mucosal Folds

Figure 3

H&E staining of canalicular entrance into the lacrimal sac. (a) shows a protruding mucosal fold at the entrance of a common canaliculus to the lacrimal sac, which is covered with epithelial cells of saccus lacrimalis (arrow). The arrows in (b) show many bundles of circular and longitudinal muscles around this region.

(a)

(b)