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DictionarySeetractreticulospinal tract
reticulospinal tract[rə¦tik·yə·lō′spīn·əl ′trakt] (neuroscience) Nerve fibers descending from large cells of the reticular formation of the pons and medulla into the spinal cord. reticulospinal tract
re·tic·u·lo·spi·nal tractcollective term denoting a variety of fiber tracts descending to the spinal cord from the reticular formation of the pons and medulla oblongata. A portion of these fibers conduct impulses from the neural mechanisms regulating autonomic functions to the corresponding somatic and visceral motor neurons of the spinal cord; others form links in nonpyramidal motor mechanisms affecting muscle tonus, reflex activity, and somatic movement.
See also: bulboreticulospinal tract, pontoreticulospinal tract. Synonym(s): tractus reticulospinalisre·tic·u·lo·spi·nal tract (rĕ-tik'yū-lō-spī'năl trakt) Collective term denoting a variety of fiber tracts descending to the spinal cord from the reticular formation of the pons and medulla oblongata. Part of these fibers conduct impulses from the neural mechanisms regulating autonomic functions to the corresponding somatic and visceral motor neurons of the spinal cord; others form links in nonpyramidal motor mechanisms affecting muscle tonus, reflex activity, and somatic movement. reticulospinal tractEither of two tracts:the pontine reticulospinal tract or the medullary reticulospinal tract. The pontine reticulospinal tract contains axons originating in the pontine reticular formation; the axons run into the spinal cord along the ventral midline (the medial part of the anterior funiculus). The medullary reticulospinal tract contains axons originating in the medial two thirds of the hindbrain reticular formation; these axons run into the spinal cord in the anterior part of the lateral funiculus. See also: tract |