Calyx (zoology)
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Calyx is a term used in animal anatomy for some cuplike areas or structures.
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[edit] Cnidarians
The spicules containing the basal portion of the the upper tentacular part of the polyp of some soft corals (also called calice).
[edit] Entoprocta
A body part of the Entoprocta from which tentacles arise and the mouth and anus are located[1].
[edit] Echinoderms
The body disk that is covered with a leathery tegumen containing calcareous plates (in crinoids and ophiuroids the main part of the body where the viscera are located)[2].
[edit] Insects
In male insects, a funnel-shaped expansion of the basal part of the vas deferens (part of the seminal duct). Also in entomology, a flattened cap of neuropile in an insect brain (a component of the corpus pedunculatum) and by certain female insects, an expansion of the oviduct into which the ovarioles open.