Decussate
Decussate
Decussate (pronunciation: /dɪˈkʌseɪt/) is a term used in biology and medicine to describe a crossing over or intersecting in the form of an X. The term is derived from the Latin word "decussatus", meaning "divided crosswise".
Etymology
The term "decussate" originates from the Latin word "decussatus", which is derived from "decussis", meaning "ten", and "as", meaning "unit". This is in reference to the Roman numeral X, which represents the number ten and is also the shape that is formed when two things decussate.
Related Terms
- Decussation: The action or process of decussating. In neuroanatomy, it refers to the crossing over of nerve fibers from one side of the brain or spinal cord to the other.
- Commissure: A bundle of nerve fibers that cross the midline of the brain or spinal cord, connecting similar structures on each side.
- Chiasm: A crossing or intersection of two tracts, as in the optic chiasm, where the optic nerves cross over each other.
- Contralateral: Pertaining to, or situated on, the opposite side. In neurology, it often refers to the side of the body opposite to that where a particular stimulus or lesion occurs.
See Also
External links
- Medical encyclopedia article on Decussate
- Wikipedia's article - Decussate
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