Ganglia

The Ganglia are of 2 types:

1. Sensory Ganglia of spinal and cranial nerves
2. Autonomic Ganglia

Sensory Ganglia:

• Fusiform swellings
• Situated on the posterior root of spinal nerve proximal to root's junction with corresponding anterior root.
• Also known as posterior root ganglia
• Similar ganglia are also found along the course of cranial nerve 5, 7, 8, 9 and 10, called sensory ganglia of these nerves.

Autonomic Ganglia:

• Irregular in shape 
• Situated along the course of efferent nerve fibers of the autonomic nervous system.
• Found in the para vertebral sympathetic chains around the root of great visceral arteries in the abdomen and close to or embedded in the walls of various viscera.