Overview

substantia gelatinosa


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Areas of grey matter in the posterior horns of the spinal cord, playing a part in pain and temperature perception. They are packed with excitatory interneurons, the neurotransmitter of which is glutamate, and inhibitory interneurons, the neurotransmitter of which is either GABA for some interneurons or the endogenous opioid enkephalin for others. [From Latin substantia matter + gelatina gelatine, from gelare to freeze, alluding to its consistency]

Subjects: Psychology.


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