From Wikipedia, the free encyclopedia

Decussation (or decussatio) is used in biological contexts to describe a crossing.^[1]

Examples include:

• In the brain, where nerve fibers cross from one lateral part to the other. See Decussation of the pyramids.
• In phyllotaxis when an opposite pattern of leaves has successive leaf pairs that are perpendicular, it is called decussate.
• In tooth enamel, where bundles of rods (rods are the basic structural unit of enamel) cross each other as they travel from the enamel-dentine junction to the outer enamel surface (or near to it).

References

1. ^ decussatio at eMedicine Dictionary

See also

• Commissure