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extrapyramidal motor system

extrapyramidal motor system in Medicine

extrapyramidal motor system n.
Any of the various brain structures affecting bodily movement, excluding the motor neurons, the motor cortex, and the pyramidal tract, and including the corpus striatum, its substantia nigra and subthalamic nucleus, and its connections with the midbrain.

The American HeritageĀ® Stedman's Medical Dictionary
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