Terminology-01

Terminology-01 - Terminology; BIOL 112-546; 547...

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Terminology; BIOL 112-546; 547 Deuterostomes 1. Tube feet - Many small tubular projections found most famously on the ventral face of a sea star 's arms, but are characteristic of the water vascular system of the echinoderm phylum which also includes sea urchins , sand dollars and sea cucumbers and many other sea creatures. 2. Ambulacrum – In Echinodermata, an area of the body surface is covered by calcite plates, that lie over one of the radial canals of the inter-water vascular system and bear tube feet. In some echinoderms (starfish), the ambulacrum is marked by a deep groove, the ambulacral groove. 3. The Madreporite – An opening used to filter water into the water vascular system of echinoderms. 4. Ampullae – Bulb at the top of tube feet which helps in locomotion. 5. Aristotle’s lantern - In regular echinoids, the jaw apparatus, which consists of five, strong jaws, each with one tooth, that form a structure shaped like a lantern inside the mouth. The teeth are used for scraping algae and other material from the surface on
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This note was uploaded on 04/03/2012 for the course BIOL 112 taught by Professor Vaughn during the Fall '08 term at Texas A&M.

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Terminology-01 - Terminology; BIOL 112-546; 547...

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