Raphespinal tract | |
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Details | |
Identifiers | |
Latin | tractus raphespinales |
Anatomical terminology |
The raphespinal tract is an unmyelinated descending serotonergic tract involved in pain modulation. It is a descending pain-inhibiting pathway; it is a component of the reticulospinal tract.[1]
It originates in the raphe nuclei (particularly the nucleus raphe magnus) of the reticular formation of the medulla oblongata (as well as serotonergic neurons of the gigantocellular reticular nucleus[2]), and projects to the spinal trigeminal nucleus, and posterior grey column (especially the substantia gelatinosa (lamina II)) of spinal cord.[1]
It consists of two components:[3]
Patestas-2016
was invoked but never defined (see the help page).