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30 Cards in this Set
- Front
- Back
sessile
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immobile, does not control own movement
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spongocoel
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central cavity in porifera, water flows into
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osculum
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top hole in porifera, water flows out of
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choanocytes
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collar cells in spongocoel, trap food w/ flagella
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mesohyl
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separates cell layers in porifera
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amoebocytes
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traveling cells in porifera, bring nutrients to whole body, secrete hard skeleton
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gastrovascular cavity
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in cnidaria, ctenophora, and platyhelminthes; for digestion, 'incomplete' digestive tract
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polyps
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attach to a medium and tentacles extend upward; coral and hydras, cnideria
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medusas
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flattened, mouth and tentacles downward, drifts for movement; cnideria
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cnidocytes
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on tentacles of cnideria
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nematocytes
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stinging cells in cnidocytes of cnideria
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pharynx
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mouth and anus of platyhelminthes
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flame cells
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regulate gas exchange and excrete nitrogenous waste in platyhelminthes
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blood fluke
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parasite in platyhelminthes, alternates between mature for in human and asexual larvae form in snail hosts
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tapeworms
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parasite in platyhelminthes, suckers and hook on head attach to digestive tract of vertebrate host, long series of sex organs line posterior end, absord food particles
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lophophore
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characterizes lophophore phyla, U shaped or circular fold in body that is ciliated to bring food particles to mouth
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visceral mass
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internal organs in mollusca
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mantle and cavity
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secretes shell, covers visceral mass, water-filled in mollusca
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radula
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toungue like appendages for feeding in mollusca
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trochophore larvae
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ciliated larval stage in mollusca and annelida
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gastropodia
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class of snails and slugs in mollusca, "stomach foot," torsion
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bivalvia
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class of clams, oysters, mussels, scallops in mollusca; two hinged shells
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cephalopodia
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class of squids and octopuses in mollusca, "head foot,"
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polychaete
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class in annelida, setae and parapodia, marine
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leeches
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class in annelida
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exoskeleton, cuticle
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hard covering on arthropoda, protein and chitin, protection, attached to muscles, water proof, molted
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trilobites
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extinct grouping of arthropoda
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chelicerae
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grouping of arthropoda; horseshoe crabs, scorpions, spiders; clawlike feeding appendages, no sensory antennae, simple eyes
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uniramians
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grouping in arthropoda; insects, centi/milli pedes; jawlike mandibles for feeding, 1 pair sensory antennae, compound and simple eyes, uniramous (unbranched) feet
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crustaceans
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grouping in arthropoda; crabs, lobsters, shrimps, barnacles; 2 pairs antennae, compound and simple eyes, biramous (branched) feet
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