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Echinodermata

Phyla Vocab

QuestionAnswer
deuterstome 1st opening (blastopore) --> the anus 2nd opening --> the mouth
ossicles calcareous spines embedded under skin
pedicellariae jaw like spines
papulae dermal branchiae, outpocketing of epidermis, for gas exchange
madreporite sieve like opening to WVS, maintain hydrostatic pressure
anbulacral groove where the tube feet stick out from
Water Vascular System a system of coelomic canals and tube-feet projections with multiple functions: locomotion, respiration, transport of food and wastes
cardiac stomach eversible, sea star evert into bivalves, closest to mouth
pyloric stomach connects to digestvie caeca to short intestine to anus
Aristotle's lantern diagnostic feeding structure of Echinoidea; 5-toothed jaw mechanism
locomotion using tube feet; muscles coordinate water flow from ampulla to extend/retract tube foot
dermal endoskeleton composed of calcareous ossicles and is covered by epidermis; allows continuous growth and provides protection
anti-fouling rid aboral surface of debris
dermal papulae fleshy dermal projections for respiration
bipinnaria a type of asteroid larva
"test" ossicle plates are fused
pinnules on the arms of Crinoidea with ambulacral food grooves and tube feet
Cuverian tubules Holothuroidea defensive toxic discharge, portions of the internal respiratory tree, which can be regerated
Created by: jmw09d
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