11. ELECTRORGCEPTION
523
Fig. 21. Histology of a medium receptor of the mormyrid Gnathonemus. There
are inner (Li) and outer ( L o ) receptor cavities that are connected by a canal ( C ) ,
but there is no clear canal to the exterior. The outer cavity extends above the dark
staining layer of flattened cells and the canal between cavities penetrates this layer.
Receptor cells (R,) of the outer cavity lie embedded in the wall, but receptor cells
( R i ) of the inner cavity protrude into the lumen. Afferent nerve fibers are present.
Preparation as for Fig. 10.
523
Fig. 21. Histology of a medium receptor of the mormyrid Gnathonemus. There
are inner (Li) and outer ( L o ) receptor cavities that are connected by a canal ( C ) ,
but there is no clear canal to the exterior. The outer cavity extends above the dark
staining layer of flattened cells and the canal between cavities penetrates this layer.
Receptor cells (R,) of the outer cavity lie embedded in the wall, but receptor cells
( R i ) of the inner cavity protrude into the lumen. Afferent nerve fibers are present.
Preparation as for Fig. 10.