Online Dictionary of Invertebrate Zoology. . 2005.

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  • Circumesophageal — Cir cum*e so*phag e*al, a. (Anat.) Circumesophagal. [1913 Webster] …   The Collaborative International Dictionary of English

  • circumesophageal connective — (Order Decapoda): One of two strands of nerve tissue surrounding esophagus and connecting dorsal supraesophageal ganglia with posterior subesophageal ganglia. May bear ganglia (paraesophageal ganglia). (Syn. esophageal connective) [Stachowitsch,… …   Crustacea glossary

  • circumesophageal nerve ring — (Class Ostracoda): Well developed ring of nerve tissue surrounding esophagus; consists anteriorly of supraesophageal ganglion, laterally of circumesophageal connective, and posteriorly of complex formed by subesophageal ganglion and more or less… …   Crustacea glossary

  • 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 …   Dictionary of invertebrate zoology

  • circumesophageal connectives — The nerve strand connectives on each side of the esophagus connecting the superesophageal ganglia and subesophageal ganglia of arthropods, annelids and brachiopods; circumoesophageal connectives …   Dictionary of invertebrate zoology

  • circumesophageal ganglion — (Order Diplostraca): Brain [Stachowitsch, 1992] …   Crustacea glossary

  • circumesophageal ring — | ̷ ̷ ̷ ̷+... noun Etymology: circum + esophageal : esophageal ring …   Useful english dictionary

  • supraesophageal ganglion — (Order Amphipoda): Concentration of nerve tissue above (anterior to) esophagus in head. Connected to subesophageal ganglion by pair of esophageal connectives. (Syn. brain) [Stachowitsch, 1992]. (Order Isopoda): Concentration of nerve tissue above …   Crustacea glossary

  • esophageal connective — (Order Cladocera): One of two strands of nerve tissue surrounding esophagus and connecting posterior part of brain with ventral nerve cord [Stachowitsch, 1992]. (Order Anostraca): One of two strands of nerve tissue extending around esophagus and… …   Crustacea glossary

  • subesophageal ganglion — Anterior ganglion of the ventral nerve cord, located beneath (posterior to) the esophagus and connected dorsally to the tritocerebrum. (Syn. subenteric ganglion) [Brusca and Brusca, 2002]. Nerve plexus below esophagus in head of malacostracans… …   Crustacea glossary

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