Ganglia are nodular masses of neuronal cell bodies (ganglion cells), together with their suporting neuroglia (capsule cells)
There are two types of ganglia in the PNS:
- sensory ganglia: - cell bodies of sensory neurons
- autonomic ganglia: cell bodies of efferent neurons from the autonomic nervous system.
Now look at the images on the right, sections of a dorsal root ganglion stained with Masson's trichrome.
Make sure you can identify the fascicles of nerve fibres leading to and/or from the ganglion and the large perikarya of the pseudounipolar neurons.
Why do you think many of the perikarya are large?