corticonuclear tract

the nerve fiber tract formed by fibers (corticonuclear fibers) associated with the pyramidal tract that arise in the cerebral cortex, descend in the internal capsule, and synapse in the various motor nuclei of the mesencephalon, pons, and medulla oblongata. Called also corticobulbar t.

Medical dictionary. 2011.

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  • tract — An elongated area, e.g., path, track, way. SEE ALSO: fascicle. SYN: tractus. [L. tractus, a drawing out] alimentary t. SYN: digestive t.. anterior corticospinal t. uncrossed fibers forming a small bundle in the anterior funiculus of the …   Medical dictionary

  • Corticobulbar tract — Brain: Corticobulbar tract Components and location of the corticobulbar tract. Latin tractus corticonuclearis NeuroNames …   Wikipedia

  • corticobulbar tract — corticonuclear t …   Medical dictionary

  • fibrae corticonucleares — corticonuclear fibers: longitudinal fibers of the pyramidal tract (see tractus pyramidalis) that arise in the cerebral cortex, descend in the internal capsule, and synapse in the various motor nuclei of the mesencephalon, pons, and medulla… …   Medical dictionary

  • Alpha motor neuron — Infobox Anatomy Name = Alpha motor neuron Latin = GraySubject = 190 GrayPage = Caption = Alpha motor neurons are derived from the basal plate (basal lamina) of the developing embryo. Width = 200 Caption2 = System = Central nervous system… …   Wikipedia

  • bundle — A structure composed of a group of fibers, muscular or nervous; a fasciculus. SYN: fasciculus (3) [TA]. aberrant bundles a group, or groups, of fibers from the corticobulbar or corticonuclear tract, directed to each of the motor …   Medical dictionary

  • Головной мозг — (encephalon) (рис. 258) располагается в полости мозгового черепа. Средний вес мозга взрослого человека составляет примерно 1350 г. Он имеет овоидную форму из за выступающих лобных и затылочных полюсов. На наружной выпуклой верхнелатеральной… …   Атлас анатомии человека

  • aberrant bundles — collections of pyramidal fibers leaving the corticonuclear tract at successive levels of the brainstem, and giving off fibers to the motor nuclei of the cranial nerves …   Medical dictionary

  • Fiber — The parts of plants that cannot be digested, namely complex carbohydrates. Also known as bulk or roughage. Complex carbohydrates from plants are rich in starch and fiber. Examples of plants that provide complex carbohydrates (fiber) are fresh… …   Medical dictionary

  • Central facial palsy — Central facial palsy, (also called colloquially central seven) is a symptom or finding characterized by paralysis or paresis of the lower half of one side of the face. It usually results from damage to upper motor neurons of the facial nerve.The… …   Wikipedia

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