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This document summarizes the corticospinal tract (CST), also known as the pyramidal tract. It originates from the motor cortex and controls voluntary movements. It is the only tract with direct connections to alpha motor neurons and motor cranial nerves. The CST crosses in the medulla and descends through the spinal cord, terminating on motor neurons. It is involved in skilled movements, while the extrapyramidal system controls posture and tone. Lesions above the spinal cord affect the opposite side of the

Author

drgoku

Language

EN