The dentate nucleus is the largest deep cerebellar nucleus. It receives Purkinje cell axons primarily from which part of the cerebellar cortex and projects to which structure via the superior cerebellar peduncle?

• A Vermis (paleocerebellum) → ipsilateral red nucleus and reticular formation
• B Flocculonodular lobe → vestibular nuclei bilaterally
• C Lateral hemisphere (neocerebellum) → contralateral red nucleus and VL thalamus ✓
• D Anterior lobe → ipsilateral VL thalamus directly

Explanation

The dentate nucleus receives Purkinje axons from the lateral cerebellar hemisphere (neocerebellum/pontocerebellum), which is the largest and phylogenetically newest part concerned with planning and coordination of skilled movements. Its axons exit via the superior cerebellar peduncle, decussate in the midbrain (decussation of Wernekink), and project to the contralateral red nucleus (for rubrospinal modulation) and the VL nucleus of the thalamus (for cortical relay). The emboliform/globose (interposed) nuclei receive vermis/paravermal input; the fastigial nucleus receives vermis and projects to vestibular nuclei.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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