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23 Cards in this Set

  • Front
  • Back
center of animal, part to which "arms" are attached
central disc
large "arms" usually numbering five
rays
small yellow or red structure on central disc
madreporic plate
hard, blunt projections covering entire surface, part of skeleton
spines
structure at the tip end of each arm, difficult to see in preserved specimens
eyespot
opening in center of central disk, difficult to observe
anus
opening in very center of central disc, surrounded by small spines
mouth
long groove running along center of each ray
ambulacral groove
soft, small, dimpled structures projecting out from and lining each side of ambulacral groove, used for movement
tube feet
how many pyloric ceca does a starfish have?
5 pairs
How many gonad pairs are in a starfish?
5
which surface is mouth located on?
ventral
which surface is the anus?
dorsal
how many radial canals in a starfish?
5
how many circular canals does a starfish have?
1
echinodermata means...
prickly skin
pyloric cecum:
digestive

aids in digestion
spines:
skeletal;

protection
mouth
digestive;

intakes food
tube feet
vascular;
movement
ring canal
vascular

connects all canals
gonads
reproductive

produce egg/sperm
anus
digestive

excretes waste