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commissure

commissure

1 9.9
A group of nerve fibers that connects the two sides of the brain or spinal cord
  • noun
  • /ˌkɒmɪˈʃʊr/
  • Specialized
translation icon : comisura
  • The commissures, in contrast to the semi-lunar valves, do not extend completely to the annulus and are supported by commissural chordae.
  • posterior commissure
  • anterior commissure

Examples

  • Actually, it's the best way to identify the interior labial commissure.

  • The commissure plays a vital role in coordinating sensory information across the brain's hemispheres.

  • Can you please identify the interior labia commissures?

  • The anterior commissure is a structure of nerve cells connecting the left and right hemispheres.

    Academic text (1995)
  • So you do a split brain operation, meaning cut the commissures, cut the optic chiasm.

  • You can't locate the interior labial commissure from the backside.

  • One specific area of the brain—the anterior commissure—was reported to be 34% larger in homosexual males (Allen & Gotski, 1992).

    Academic text (1995)
  • The commissure connects the left and right sides of the brain, allowing communication between them.

  • Surgeons often cut the commissure during procedures to control severe epilepsy.

Synonyms

tract
vscommissure
  • Specialized
4 7.9

A bundle of nerve fibers in the brain or spinal cord that carry signals

connects corresponding areas on left and right sides rather than a one-sided route
nerve tract
vscommissure
  • Specialized
6.2

A group of nerve fibers in the brain or spinal cord that carry messages

connects matching regions across the two sides instead of staying on one side

Surface Forms

commissure singular
commissures plural

Etymology

Commissure comes from the Latin prefix com- ('together') and a root meaning 'to join', so it originally meant a place where two things are joined. That's why in anatomy a commissure is a bundle of nerves that connects the two sides of the brain or spinal cord.