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

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 pyramidal tract is the more important clinically.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander

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.

The "Motor path" is the pyramidal tract, only the beginning of which is shown here, its further course being indicated in Fig.

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

The remaining fibres pass down as the direct pyramidal tract, and decussate in the cord near their termination.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander