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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 683jelly. b. Ventral : a transverse row <strong>of</strong> cells opening into thefloor <strong>of</strong> the pharynx between the ducts <strong>of</strong> the lateral pharyngealglands. 2. (NEMATA) see esophageal glands.pharyngeal skeleton see cephalopharyngeal skeletonpharyngeal tube (ARTHRO: Insecta) In Siphunculata, the entranceto the cibarial pump. see sac tube, trophic sac.pharyngeate, nonocellate cercariae (PLATY: Trematoda)Furcocercous cercariae that develop in sporocysts or rediaeand penetrate into a vertebrate to encyst.pharyngo-intestinal valve see cardiapharynx n.; pl. pharynges, pharynxes [Gr. pharynx, gullet]1. In insects, annelids, arachnids and platyhelminths theanterior part <strong>of</strong> the foregut, between the mouth and theesophagus. 2. (NEMATA) a. The posterior portion <strong>of</strong> thestoma (esophastome); anterior stomal region <strong>of</strong> theesophagus proper. b. Sometimes used as a synonym <strong>of</strong>esophagus.pharynx <strong>of</strong> Leisblein see esophageal bulbphasic castration Pertaining to individuals in which the gonadsare inhibited in development due to seasonal or ontogeneticconditions. see alimentary castration, nutricialcastration.phasic muscle (MOLL: Bivalvia) In oysters, the fast muscle;adductor muscle that reacts quickly but does not endure.phasma n.; pl. -ata [Gr. phasma, apparition] (NEMATA: Adenophorea)Phasmid-like areas on the tails <strong>of</strong> some Desmoscolecida;tiny canals lead away from these structures, butno phasmidial gland has been found.phasmid n. [Gr. phasma, apparition; edios, like] (NEMATA) One<strong>of</strong> a pair <strong>of</strong> lateral caudal pores (sensilla) connecting with aglandular pouch that alledgedly functions as a chemoreceptor.see scutellum.Phasmidia see Secernenteaphena pl. <strong>of</strong> phenonphene n. [Gr. phainein, to appear] A genetically controlledphenotypic character.

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