Commissure
Commissure
Commissure (/kɒˈmɪʃər/), from the Latin commissura, meaning "a joining together or connecting", is a term used in various branches of medicine and anatomy to refer to a place where two things are joined.
Definition
In a medical context, a commissure is typically a bundle of nerve fibers that cross the midline of the brain to connect the two cerebral hemispheres. The most well-known of these is the corpus callosum, but there are several others, including the anterior commissure and the posterior commissure.
In anatomy, the term can also refer to the joining of two similar parts, such as the commissure of the lips, where the upper and lower lips meet, or the commissure of the eyelids, where the upper and lower eyelids meet.
Related Terms
- Corpus callosum: The largest commissure in the human brain, connecting the two cerebral hemispheres.
- Anterior commissure: A smaller bundle of nerve fibers connecting the two cerebral hemispheres.
- Posterior commissure: Another commissure in the brain, located near the pineal gland.
- Commissure of lips: The point at which the upper and lower lips meet.
- Commissure of eyelids: The point at which the upper and lower eyelids meet.
See Also
External links
- Medical encyclopedia article on Commissure
- Wikipedia's article - Commissure
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