a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles in Amphioxi and the ammocoete stage of Petromyzontiformes. In the latter it changes during development into the thyroid gland. Also called hypopharyngeal groove

Dictionary of ichthyology. 2009.

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  • Endostyle — En do*style, n. [Endo + Gr. ? a pillar.] (Zo[ o]l.) A fold of the endoderm, which projects into the blood cavity of ascidians. See {Tunicata}. [1913 Webster] || …   The Collaborative International Dictionary of English

  • Endostyle — An endostyle is a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles. It is found in urochordates and cephalochordates, and in the larvae of lampreys. It aids in transporting food to the… …   Wikipedia

  • endostyle — noun Etymology: International Scientific Vocabulary end + Greek stylos pillar more at steer Date: 1854 a pair of parallel longitudinal folds projecting into the pharyngeal cavity in lower chordates (as the tunicates) that secrete mucus for… …   New Collegiate Dictionary

  • endostyle — n. [Gr. endon, within; stylos, pillar] (MOLLUSCA) A special gland on the ctenidial axis, that produces mucus used for transport of particles to the mouth …   Dictionary of invertebrate zoology

  • endostyle — /en deuh stuyl /, n. Anat. a ciliated groove or pair of grooves in the pharynx of various lower chordates, as tunicates, cephalochordates, and larval cyclostomes, serving to accumulate food particles and pass them along the digestive tract. [1850 …   Universalium

  • endostyle — en·do·style …   English syllables

  • endostyle — …   Useful english dictionary

  • endocrine system — Group of ductless glands that secrete hormones necessary for normal growth and development, reproduction, and homeostasis. The major endocrine glands are the hypothalamus, pituitary, thyroid, islets of Langerhans, adrenals, parathyroids, ovaries …   Universalium

  • TUNICIERS — Les Tuniciers, ou Urocordés, sont des organismes marins qui ont en commun plusieurs traits d’organisation originaux; en particulier, leur corps est généralement entouré par un revêtement épais, la tunique . Ils présentent des affinités profondes… …   Encyclopédie Universelle

  • chordate — /kawr dayt/, Zool. adj. 1. belonging or pertaining to the phylum Chordata, comprising the true vertebrates and those animals having a notochord, as the lancelets and tunicates. n. 2. a chordate animal. [1885 90; see CHORDATA] * * * Any member of… …   Universalium

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