Description

The tectospinal tract is a nerve pathway that coordinates head and eye movements. This neural tract is part of the indirect extrapyramidal tract. To be specific, the tectospinal tract connects the midbrain tectum and the spinal cord.

It is responsible for motor impulses that arise from one side of the midbrain to muscles on the opposite side of the body. The function of the tectospinal tract is to mediate reflex postural movements of the head in response to visual and auditory stimuli.

The portion of the midbrain from where this tract originates is the superior colliculus, which receives afferents from the visual nuclei, then projects to the contralateral and ipsilateral portion of the first cervical neuromeres of the spinal cord, the oculomotor and trochlear nuclei in the midbrain and the abducens nucleus in the caudal portion of the pons.

The tract descends to the cervical spinal cord to terminate in Rexed laminae VI, VII, and VIII to coordinate head, neck, and eye movements, primarily in response to visual stimuli.


Cette définition inclut du texte du site wikipedia - Wikipedia: l'encyclopédie libre . (le 22 Juillet 2004) . FL : Wikimedia Foundation , Inc. Récupéré le 10 Août 2004, à partir http://www.wikipedia.org

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