raphe nucleus

raphe nucleus definition - medical

raphe nucleus

noun
Any of the various unpaired nerve cell groups that are located in and along the median plane of the mesencephalic and rhombencephalic tegmenta that include neurons with serotonin-carrying axons that extend to the hypothalamus, septum, hippocampus, and cingulate gyrus.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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