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corticospinal tract

a major motor pathway that originates in the cerebral cortex (see motor cortex), passes through the pyramid of the medulla oblongata, and descends to terminate in the spinal cord. At the pyramid, most of its fibers cross over to form the lateral corticospinal tract; the remaining fibers, forming the smaller anterior corticospinal tract, descend anteriorly in the white matter of the spinal cord to terminate in the anterior horns. See also pyramidal tract.

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Psychology term of the day

December 18th 2024

sport

sport

n.

1. a physical contest between individuals or teams that is conducted under codified rules, is controlled by nonparticipants, and can have only one winner.

2. in genetics, an organism that has undergone mutation and is distinctly different from its parents.