reticulospinal tract


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Related to reticulospinal tract: Rubrospinal tract, Tectospinal tract

re·tic·u·lo·spi·nal tract

collective 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.

re·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 tract

Either 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

reticulospinal tract

spinal cord tract originating in the reticular formation in the brainstem and impinging on motor fibers arising in the spinal cord.
References in periodicals archive ?
A patient with left lateral medullary infarct involving the reticulospinal tract displayed ipsilateral absence of shivering when he became febrile from a urinary tract infection.
The present case is thought to be the first to relate a unilateral injury of the reticulospinal tract in a human to a clinical manifestation: the ipsilateral absence of shivering.