circumesophageal commissure

circumesophageal commissure
The major commissure of the nervous system of many invertebrates to which and from which ramify anteriorly and posteriorly directed nerves and nerve cords; sometimes called the nerve ring.

Online Dictionary of Invertebrate Zoology. . 2005.

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Look at other dictionaries:

  • nerve ring — Any ring of nerve fibers, may be around the mouth, esophagus, anus, bell margin, etc; see circumesophageal commissure …   Dictionary of invertebrate zoology

  • nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …   Universalium

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