radial water vascular canal

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• Water vascular system — The water vascular system is a hydraulic system used by echinoderms, such as starfish and sea urchins, for locomotion, food and waste transportation, and respirationcite book | first = Eldra | last = Solomon| coauthors = Linda Berg, Diana Martin… …   Wikipedia

• ring canal — 1. (CNIDARIA: Hydrozoa) A circular canal around the margin of the umbrella into which the radial canal join as part of the gastrovascular system. 2. (ECHINODERMATA) A circular part of the water vascular system encircling the esophagus …   Dictionary of invertebrate zoology

• echinoderm — /i kuy neuh derrm , ek euh neuh /, n. any marine animal of the invertebrate phylum Echinodermata, having a radiating arrangement of parts and a body wall stiffened by calcareous pieces that may protrude as spines and including the starfishes, sea …   Universalium

• Starfish — For other uses, see Starfish (disambiguation). Asteroidea redirects here. For the Asteraceae subfamily, see Asteroideae. Sea Stars Temporal range: Ordovician–Recent …   Wikipedia

• circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …   Universalium

• Strongylocentrotus droebachiensis — Taxobox name = Green sea urchin image caption = Strongylocentrotus droebachiensis regnum = Animalia phylum = Echinodermata classis = Echinoidea subclassis = Euechinoidea ordo = Echinoida familia = Strongylocentrotidae genus = Strongylocentrotus… …   Wikipedia

• animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …   Universalium

• Madreporite — The madreporite is an opening used to filter water into the water vascular system of echinoderms. It is visible as a small red or yellow button like structure, looking like a small wart, on the aboral surface of the central disk of a starfish.The …   Wikipedia

• skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… …   Universalium

• Brittle star — Temporal range: 488.2–0 Ma …   Wikipedia

• Sea cucumber — For the food product made from sea cucumber, see Sea cucumber (food). Sea cucumber A sea cucumber from the Mediterranean Sea Scientific classification …   Wikipedia