decussation of pyramids

decussation

[de″kus-sa´shun] a crossing over; the intercrossing of fellow parts or structures in the form of an X.decussation of pyramids the anterior part of the lower medulla oblongata in which most of the fibers of each pyramid intersect as they cross the midline and descend as the lateral corticospinal tracts.

de·cus·sa·tion of pyramids

[TA] the intercrossing of the bundles of corticospinal fibers at the lower border region of the medulla oblongata. Synonym(s): decussatio pyramidum [TA], decussatio motoria, motor decussation

单词	decussation of pyramids
释义	DictionarySeedecussation decussation of pyramids decussation [de″kus-sa´shun] a crossing over; the intercrossing of fellow parts or structures in the form of an X.decussation of pyramids the anterior part of the lower medulla oblongata in which most of the fibers of each pyramid intersect as they cross the midline and descend as the lateral corticospinal tracts. de·cus·sa·tion of pyramids [TA] the intercrossing of the bundles of corticospinal fibers at the lower border region of the medulla oblongata. Synonym(s): decussatio pyramidum [TA], decussatio motoria, motor decussation
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