KIN110 Lecture Notes - Lecture 11: Deep Cerebellar Nuclei, Spinal Nerve, Cervical Vertebrae
Document Summary
Brainstem is made up of the pons, the midbrain and the medulla oblongata. The cerebellum: balance and motor coordination function is to coordinate movement (usually involuntary) Processes inputs from the cerebral motor cortex brainstem nuclei and sensory receptors (proprioreceptors) => timing and patterns of skeletal muscle contraction for smooth daily movements (driving, playing a musical instrument etc. , not under conscious control) Connected by the vermis neurons interconnecting the two cerebellar hemispheres - each hemisphere is divided into three lobes: anterior, posterior and occulonodular - anterior and posterior lobes have overlapping sensory and motor maps of body: Intermediate: distal limbs, skilled movements lateral: input from association areas of cortex. Virtually all bers entering and leaving cerebellum are ipsilateral (coming from the same side of the body) (unlike cerebral cortex) Superior connects cerebellum and the midbrain; bers originate from neurons in deep cerebellar nuclei and project to cerebral motor cortex via thalamus.