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Identify the oral and aboral surfaces. On the aboral surface, find the sieve plate (madreoporite), a structure that allows water to enter the water vascular system. Notice the spines that protrude from the skin. The word "echinoderm" means spiny-skinned".
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aboral ... medusoid's convex aboral surface is oriented ... Full article >>>; Add the "Quote of the Day" to Your Site or Blog Now! Home - Quote Topics - Quotes of the Day - Quote Keywords - Author Types - Quotation Trivia ...
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Place the starfish on its aboral surface (side without the little tube feet). Notice the radial symmetry. The starfish is usually composed of five arms, which radiate from the central disc.
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Definition of aboral in the Online Dictionary. Meaning of aboral. Pronunciation of aboral. Translations of aboral. aboral synonyms, aboral antonyms. Information about aboral in the free online English dictionary and encyclopedia. ... aboral - opposite to or away from the mouth; "the aboral surface of a starfish"
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Comatulids develop a stalk during their postlarval stages (left) but eventually shed it and retain only the topmost segment, a large modified ossicle called the centrodorsal, located in the middle of the aboral surface.
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On the aboral surface the bands of cilia were oriented perpendicular to lines radiating from the apex. Flow visualization using dyes and particles showed that aboral currents flow radially towards the ambitus.
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