Extrapyramidal system

Last revised by Rohit Sharma on 21 Jun 2024

The extrapyramidal system is the part of the motor system involved in modulation and regulation of movement. As its name suggests, it is distinct from the motor fibres that are relayed through the pyramids of the medulla oblongata (corticospinal and corticobulbar tracts).

It is composed of nerve cells, nerve tracts and pathways that connect the cerebral cortex, basal ganglia, thalamus, cerebellum, reticular formation, and spinal neurones. Brainstem nuclei of the extrapyramical system include the red nucleus and substantia nigra.

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