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Cortex Red nucleus Contralateral LMNs Globus pallidus Basal nuclei: Caudate nucleus Rubrospinal tract Reticulospinal tracts Descending Reticular Formation.

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Presentation on theme: "Cortex Red nucleus Contralateral LMNs Globus pallidus Basal nuclei: Caudate nucleus Rubrospinal tract Reticulospinal tracts Descending Reticular Formation."— Presentation transcript:

1 Cortex Red nucleus Contralateral LMNs Globus pallidus Basal nuclei: Caudate nucleus Rubrospinal tract Reticulospinal tracts Descending Reticular Formation Corticospinal tract decuss PYRAMIDS Vestibulospinal tract Vestibular nucleus Ipsilateral LMNs Cerebellum Olivary nucleus Thalamus Spinocerebellar tracts Pontine RF decuss Medullary RF decuss -+ FORE MID HIND Tectum ++ + - - Primary motor   Extensor activation Pontine nuclei - 2012 Martin Cake / Murdoch University. Shared under Creative Commons Licence (CC BY-NC-SA 3.0) for the OVAM (Online Veterinary Anatomy Museum) project

2 Postural phase + Anti-gravity extensors - Flexors Protraction phase + Flexors - Extensors Pontine Reticulospinal Vestibulospinal Medullary Reticulospinal ‘Central Pattern Generator’ Interneurons Spinal reflex arcs alpha neurons (muscle spindle) gamma neurons (fusimotor) Rubrospinal UMN LMN MUSCLE CONTRACTION 2012 Martin Cake / Murdoch University. Shared under Creative Commons Licence (CC BY-NC-SA 3.0) for the OVAM (Online Veterinary Anatomy Museum) project

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