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23 Cards in this Set
- Front
- Back
center of animal, part to which "arms" are attached
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central disc
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large "arms" usually numbering five
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rays
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small yellow or red structure on central disc
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madreporic plate
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hard, blunt projections covering entire surface, part of skeleton
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spines
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structure at the tip end of each arm, difficult to see in preserved specimens
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eyespot
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opening in center of central disk, difficult to observe
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anus
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opening in very center of central disc, surrounded by small spines
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mouth
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long groove running along center of each ray
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ambulacral groove
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soft, small, dimpled structures projecting out from and lining each side of ambulacral groove, used for movement
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tube feet
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how many pyloric ceca does a starfish have?
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5 pairs
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How many gonad pairs are in a starfish?
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5
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which surface is mouth located on?
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ventral
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which surface is the anus?
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dorsal
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how many radial canals in a starfish?
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5
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how many circular canals does a starfish have?
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1
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echinodermata means...
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prickly skin
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pyloric cecum:
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digestive
aids in digestion |
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spines:
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skeletal;
protection |
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mouth
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digestive;
intakes food |
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tube feet
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vascular;
movement |
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ring canal
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vascular
connects all canals |
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gonads
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reproductive
produce egg/sperm |
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anus
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digestive
excretes waste |