pyramidal tract

noun

Anatomy.

any of four tracts of descending motor fibers that extend in pairs down each side of the spinal column and function in voluntary movement.

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Word History and Origins

Origin of pyramidal tract¹

First recorded in 1885–90

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Example Sentences

Examples have not been reviewed.

Excitatory pyramidal tract neurons, which reside in a region called layer 5 in the anterior lateral motor cortex, communicate with other neurons located many thousands of cell diameters away by establishing physical contacts.

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The direct pyramidal tracts occur only in man and man-like apes.

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It seems to produce a sclerosis of the pyramidal tracts of the cord.

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They included portions of all the tracts, the pyramidal tract as well.

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In some so much of the pyramidal tract remains uncrossed that there may be decided weakness on the same side as the lesion in the brain.

From

pyramidal peak pyramid bet

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