2. SYMP. GGL. SLIDE

ORIENTATION IN THE SLIDE

Due to a small size of ganglion its structure is simpler than that of CNS structures. A surface is covered by the capsule of a dense connective tissue  (in an interactive slide indicated in brown) from which are derived tiny septa supplying the parenchyma with the blood vessels. Outside from the capsule there is a white adipose connective tissue with many blood vessels. In the vicinity to the  ganglion the vegetative nerve can be often seen. Inside the  parenchyma the bodies of many ganglion cells can be found – in an interactive slide some are indicated in blue. Perikarya of ganglionic cells are scattered through the parenchyma. A space left between the ganglionic cells are filled in with mainly by unmyelinated nerve fibres.

Fig. 2. Interactive slide of the ganglion: A survey. Illustration legend can be found in the text.
Author of the  microphotograph: J. Mokrý.

The parenchyma of the  ganglion (Fig. 3) contains well apparent large bodies of  ganglionic (nervous) cells (in an interactive slide indicated by a dotted line). Inside of the perikaryon the oval nucleus (grey) with a prominent nucleolus can be seen (black). The cytoplasm contains well visible accumulations of  basophilic Nissl tigroid substance (purple) and sometimes also pigment lipofuscin (brown). Many processes of multipolar ganglionic cells are not  seen well in a section. A body of the ganglion cell is covered by a discontinuous layer of satellite cells (red) called also as  amphicytes. Nerve fibres filling in the space between the  ganglionic cells are  unmyelinated.

Fig. 3. Interactive slide of the ganglion cells. Moving a cursor to an image shows structures in the slide in different colours. llustration legend can be found in the text.
Author of the  microphotograph: J. Mokrý.