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30 Cards in this Set
- Front
- Back
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Crinoidea |
water lily |
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stelleroidae |
brittle starts, sea star |
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echinoidea |
Sea urchin, Sand Dollar |
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holothuroidae |
Sea cucumber |
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Water Vascular system (holothuroidae) |
Madreporite into coelomic cavity, no outside connection |
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crinoidea digestion |
complete system (ambulacral groove |
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Stelleroidea features |
tube feet, sensitive to light |
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Brittle star digestion |
digestion in disk, no anus |
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brittle startwater exchange |
Bursal Slits |
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sea star digestion |
lower cardiac stomach digest food (upper pyloric stomach for secreting enzymes and absorption) |
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pedocellaria |
hook claws on sea stars |
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Concentricycloids |
Sea Dasies |
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Ossicles |
Not flexible parts of sea urchin( spines move in ball and socket)
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aristotles lanter |
feeding opening in sea urchins |
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Pedicellariae |
some are toxic (hook things) |
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Feeding echinoidea |
Teeth protrude from aristotles lantern to scrape algae |
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Echonoidea digestion |
mouth- esaphogus-intestine- anus |
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holothuroidea |
tube feet modified into tentacles aroud mouth |
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holothuroidea digestion |
Elongated ( mouth-esaphogous- stomach-intestine-cloaca-anus) |
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holothuroidea respiration |
Connects to cloaca into water supply |
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Holothuroidea reproduction |
most dioecious ( external fertilization) |
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Holothuroidea larvae |
Free swimming, metamorphosis into adult |
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Echinoderm Nervous system |
No brain, 3 nerve network, |
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ectonueral |
(ring around esophogus recieves sensory input) |
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Hyponeural |
Circumoral nerve, motor function |
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entoneural |
aboral end, neurons from stalk down arms |
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water vascular system |
hydrolic system used by echinoderms for processes |
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sea star WVS |
Madreporite - ampulla- stone canal-ring canal- radial canals-ambulacral grooves |
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ampulla |
connected to tube feet |
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sea cucumber WVS |
folled with internal fluid, not water |
