Definitions

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Brain

Main concentration of nreve tissue in head; consists of supraesophagael ganglion (protocerebrum and deutocerebrum) and, posterior to mouth, tritocerebrum (ganglion of antennal somite). Continues posteriorly as ladder-like ventral nerve cords. [Stachowitsch, 1992]
Main concentration of nerve tissue in head. Consists basically of ganglion (supraesophageal ganglion = protocereberum + deutocerebrum) anterior to esophagus and ganglion (tritocerebrum) to side of or posterior to esophagus. Continues posteriorly as ladder-like ventral nerve cord. [Stachowitsch, 1992]
main concentration of nerve tissue in head. Consists basically of ganglion (supraesophageal ganglion = protocerebrum and deuterocerebrum) anterior to esophagus and ganglion (tritocerebrum = circumesophageal ganglion = ganglion of antennal somite) to each side of or posterior to esophagus. Continues posteriorly as ladder-like ventral nerve cord. [Stachowitsch, 1992]
(Taxon-specific: Family Pycnogonidae) Main concentration of nerve tissue; consists of supraesophageal ganglion (protocerebrum, deuterocerebrum) and, posterior to mouth, tritocerebrum (ganglion of antennal somite). [Stachowitsch, 1992]
Main concentration of nerve tissue in cephalon. Connected with "eyes" by optic nerves and continues posteriorly to form subesophageal ganglion. [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]
(Taxon-specific: Class Secernentea) Supraesophageal ganglion. [Stachowitsch, 1992]
(Taxon-specific: Order Monhysterida) Supraesophageal ganglion. [Stachowitsch, 1992]
(Taxon-specific: Order Rhabditida) Supraesophageal ganglion. [Stachowitsch, 1992]
(Taxon-specific: Family Cyatholaimidae) Supraesophageal ganglion. [Stachowitsch, 1992]
Main concentration of nerve tissue in cephalon. Consists of anterior protocerebrum, median deutocerebrum (ganglion of antennular somite), and, at some distance posterior to deutocerebrum, a tritocerebrum (ganglion of antennal somite). Surrounds esophagus and gives rise to pair of ventral nerve cords. [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]
Main concentration of nerve tissue located above foregut in anterior region of head (cephalon); connected to ventral nerve cord by pair of circumesophageal commissures.
(syn. supraesophageal ganglion) [Stachowitsch, 1992]
Main concentration of nerve tissue above (anterior to) esophagus. Continues posterior to esophagus as ventral nerve cord.
(syn. supraesophageal ganglion) [Stachowitsch, 1992]
Supraesophageal ganglion. [Stachowitsch, 1992]