subesophageal ganglion

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 [Moore and McCormick, 1969].
Nerve plexus below esophagus [McLaughlin, 1980].
(Order Diplostraca):
Brain [Stachowitsch, 1992].
(Class Cephalocarida):
Concentration of nerve tissue below (posterior to) esophagus. Connected to brain by connectives surrounding esophagus. (See also ventral nerve cord) [Stachowitsch, 1992].
(Order Tanaidacea):
Main concentration of nerve tissue above (anterior to) esophagus. Connected to subesophageal mass by esophageal connectives [Stachowitsch, 1992].
(Order Decapoda):
Concentration of nerve tissue below (posterior to) esophagus. Consists of fused ganglia of somites bearing mouthparts (mandibles to third maxillipeds) and is connected to supraesophageal ganglion by pair of circumesophageal connectives. Continues posteriorly as ventral nerve cord. See: postesophageal ganglion [Stachowitsch, 1992].
(Order Amphipoda):
Concentration of nerve tissue below (posterior to) esophagus. Consists of fused ganglia of mouthparts (mandibles, maxillules, maxillae, maxillipeds) and is connected to brain (supraesophageal ganglion) by pair of esophageal connectives. Continues posteriorly as ventral nerve cord [Stachowitsch, 1992].
(Order Isopoda):
Concentration of nerve tissue below (posterior to) foregut. Consists of fused ganglia of mouthparts (mandibles, maxillules, maxillae, maxillipeds). Continues posteriorly as ventral nerve cord [Stachowitsch, 1992].
(Order Mysida):
In certain mysidaceans, concentration of nerve tissue below (posterior to) esophagus. Joined to supraesophageal ganglion by pair of esophageal connectives and continues posteriorly as ventral nerve cord [Stachowitsch, 1992].
(Order Stomatopoda):
Postoral ganglion [Stachowitsch, 1992].
(Subclass Branchiura):
Concentration of nerve tissue below (posterior to) esophagus. Connected to supraesophageal ganglion by pair of circumesophageal connectives and adjoined posteriorly by partially fused thoracic ganglia. Innervates mandibles, maxillules, and maxillae [Stachowitsch, 1992].
(Subclass Cirripedia):
Concentration of nerve tissue below (posterior to) esophagus. Joined to supraesophageal ganglion by pair of esophageal connectives. Continuous posteriorly with ventral nerve cord or fused with ganglia of ventral nerve cord to form ventral nerve mass [Stachowitsch, 1992].
(Class Ostracoda):
Concentration of nerve tissue posterior to esophagus. Fused to more or less concentrated ventral nerve cord to form posterior part of circumesophageal nerve ring [Stachowitsch, 1992].
(Class Remipedia):
Brain [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • Subesophageal ganglion — Subesophageal Sub*e so*phag e*al, a. (Zo[ o]l.) Situated beneath the esophagus. [Written also {sub[oe]sophageal}.] [1913 Webster] {Subesophageal ganglion} (Zo[ o]l.), a large special ganglion situated beneath the esophagus of arthropods, annelids …   The Collaborative International Dictionary of English

  • Subesophageal ganglion — Insects = The subesophageal ganglion of insects is composed of three pairs of fused ganglia. It controls the mouthparts, the salivary glands and certain muscles.The subesophageal ganglion sits beneath the esophagus. It is connected to the… …   Wikipedia

  • subesophageal ganglion — The nerve plexus below the esophagus …   Dictionary of invertebrate zoology

  • Subesophageal — Sub*e so*phag e*al, a. (Zo[ o]l.) Situated beneath the esophagus. [Written also {sub[oe]sophageal}.] [1913 Webster] {Subesophageal ganglion} (Zo[ o]l.), a large special ganglion situated beneath the esophagus of arthropods, annelids, and some… …   The Collaborative International Dictionary of English

  • subesophageal mass — (Order Tanaidacea): Concentration of nerve tissue below (posterior to) esophagus. Connected to supraesophageal ganglion by pair of esopha geal connectives. Consists of ganglia of mandibles, maxillules, maxillae, maxillipeds, and chelipeds.… …   Crustacea glossary

  • supra-esophageal ganglion — Nerve plexus above esophagus in head of malacostracans [Moore and McCormick, 1969]. Nerve plexus above esophagus, equivalent to brain [McLaughlin, 1980]. (Order Cladocera): Main part of brain above (in front of) esophagus. Consists of… …   Crustacea glossary

  • 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

  • Supraesophageal ganglion — The supraesophageal ganglion (insect brain) is the first part of the insect central nervous system. It receives and processes information from the first, second, and third metameres. The supraesophageal ganglion lies dorsal to the esophagus and… …   Wikipedia

  • postoral ganglion — (Order Stomatopoda): Concentration of nerve tissue posterior to mouth; consists of fused ganglia of eight somites (mandibles to fifth thoracomeres). Joined to supraesophageal ganglion by pair of long circumoral connectives and continues… …   Crustacea glossary

  • thoracic ganglion — (Subclass Branchiura): One in a series of four partially fused ganglia of thorax region. Innervates thoracic appendage (thoracopod). Adjoined anteriorly to subesophageal ganglion and posteriorly to abdominal ganglion to form six lobe mass in… …   Crustacea glossary

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