Cerebellum

3. Longitudinal ZonesA. Vermis- most medal portion of cerebellum;associated with the fastigial nucleus, concerned withregulation of muscle tone for posture and locomotion.B. Paravermis- intermediate part of the cerebellum,associated with the interpositus nucleus; participates inthe control of an evolving movement by utilizingproprioceptive sensory information generated by themovement itself to correct errors in the movementC. Hemisphere-the largest andmost lateral part of thecerebellum; associated with thedentate nucleus; influences theoutput to the motor cortex &permits fine delicateadjustments in muscle tone->skilled movementVermisParavermisHemisphere