decussation


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Related to decussation: decussation of pyramids

dec·us·sa·tion

 (dĕk′ə-sā′shən, dē′kə-)
n.
1. A crossing in the shape of an X.
2. Anatomy An X-shaped crossing, especially of nerves or bands of nerve fibers, connecting corresponding parts on opposite sides of the brain or spinal cord.

de•cus•sa•tion

(ˌdi kəˈseɪ ʃən, ˌdɛk ə-)

n.
1. an instance of crossing or the condition of being crossed in the form of an X.
2. a nerve or tract of nerve fibers that crosses from one side of the central nervous system to the other.
[1650–60]

decussation

the state of being in the form of an X. See also joining.
See also: Form
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.decussation - an intersection or crossing of two tracts in the form of the letter X
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
chiasma opticum, optic chiasm, optic chiasma - the crossing of the optic nerves from the two eyes at the base of the brain
Translations

de·cus·sa·tion

n. decusación, cruzamiento de estructuras en forma de X;
___ of pyramids___ de las pirámides, cruzamiento de fibras nerviosas de una pirámide a otra en la médula oblongata;
optic ______ óptica, cruzamiento de las fibras del nervio óptico.
References in periodicals archive ?
3],[9] Based on the special anatomical structures of decussation of fibers in the pons, an infarct in the ventral pons might affect the ipsilateral nuclei, and the tracts that pass to the contralateral MCPs and those passing across from the contralateral nuclei [Figure 5].
The decussation or separation of optic nerve fibres at the optic chiasm means that the right hemifield is projected to the left striate cortex and the left hemifield is projected to the right striate cortex (see Figure 2).
Abnormal cerebellar development and axonal decussation due to mutations in AHI1 in Joubert syndrome.
The sphincter fibers form Y-shaped decussation in the posterior midline that is anchored to the mucosa.