GA8-4-06
Terms
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- Nucleus
- Collection of nerve cell bodies within the CNS
- Ganglion
- Collections of nerve cell bodies inside PNS
- Dorsal Root Ganglion
-
Sensory
No Synapse
PNS - Autonomic Ganglion
-
Visceral motor
Have a synapse
PNS - Dorsal Primary Ramus
- Goes to intrinsic muscles of back and skin of back.
- Ventral Ramus
- All areas of the body except intrinsic muscles and skin of back
- Rami Communicantes
- Communicating branches connecting sympathetic chain ganglia and spinal nerve.
- Parts of a Typical Spinal Nerve
-
-Ventral Horn
-Dorsal Horn
-Gray Matter
-Ventral (anterior) root
-Dorsal root
-Vertebral body
-DRG (Sensory ganglion)
-Dorsal Primary Ramus
-Ventral Primary Ramus
-Sympathetic chain w/ connections via rami communicantes
-spinal nerves
-sensory nerve fibers
-somatic motor fibers - Somatic Motor Fibers
-
-Arise from anterior horn cells.
-Axons pass into spinal nerve via ventral root
-From spinal nerve, passes into dorsal and ventral rami - Pseudounipolar Process
- Extended process from nerve cell body which divides into a central process extending to the CNS and a peripheral process extending to the periphery