General somatic afferent

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General Somatic Afferent is a sensory neuron of Homos Sapiens Sapiens .

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General Somatic Afferent (GSA) is a sensory neron located ranges from the spinal nerves to the cranial nerves.It is located in the column of gray matter in the hindbrain and spinal cord of an developing embryo. GSA is depicted in the adult by sensory nuclei of the trigeminal nerve and relay cells of the spinal cord.

Neuronal Type: Sensory Neuron



It is a type of neuron that innervating structures derived from somites.Sensory cell bodies is located in sensory ganglia and attached to cranial nerves as they enter central nervous system. It has dendrites, with a cell body in the middle. A long axon and Myelin Sheath covered.


GSA has a sensory receptor that sends signals that cause the perception of pain in response to potentially damaging stimulus.Sensory to skin, joints, muscle and tendon receptor endings, nasal and oral cavity

Synaptic Connections

Synaptic Inputs

Sensory cell bodies in sensory ganglia attached to cranial nerves as they enter central nervous system, like dorsal root ganglia. It runs from the Pacinian corpuscles to the brain to sensor pressure and sent Synaptic Outputs.

Synaptic Outputs

The Synatic Outputs then could be observer in the Cerebellum of the brain and a person would feel what GSA sensor.


Leung CF, Miller AL, Korzh V, Chong SW, Sleptsova-Freidrich I, Webb SE.Visualization of stochastic Ca2+ signals in the formed somites during the early segmentation period in intact, normally developing zebrafish embryos. 2009 Sep;51(7):617-37.

J Comp Neurol.Medullary efferent and afferent neurons of the facial nerve of the pit viper Gloydius brevicaudus. 2004 May 3;472(3):345-57.

1: Auton Neurosci. Pacinian corpuscles are pressure receptors. 2003 Oct 31;108(1-2):45-9.

Additional information

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