pyramidal tract

American  

noun

Anatomy.

1. 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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Etymology

Origin of pyramidal tract

First recorded in 1885–90

Example Sentences

See Examples For:

pyramidal tract

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

From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Warfield, Louis Marshall

These are cerebral influences acting by way of the pyramidal tract upon the spinal center for the reflex.

From Psychology A Study Of Mental Life by Woodworth, Robert S.

In the reflex, the lower center is aroused by a sensory nerve, and in the voluntary movement by the pyramidal tract.

From Psychology A Study Of Mental Life by Woodworth, Robert S.

The upper part of this path, consisting of axons issuing from the giant pyramids of the motor area and extending down into the spinal cord, is the pyramidal tract.

From Psychology A Study Of Mental Life by Woodworth, Robert S.

The lower center can be aroused in quite another way, and that is by nerve currents coming from the brain, by way of the motor area and the pyramidal tract.

From Psychology A Study Of Mental Life by Woodworth, Robert S.