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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Deuterostome
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animals in which the first embryonic opening becomes the anus and the oral opening is secondarily derived
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echinodermata
chordata |
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Phylum Echinodermata
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body wall contains calcareous ossicles
pentaradial symmetry water vascular system with tube feet pedicellariae on outside surfaces dermal branchiae for respiration |
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Class Crinoidea
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sea lilies and feather stars
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Class Echinoidea
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sea urchins, sand dollars, sea biscuits
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armless
globe or disc-shaped with movable spines hardened test-1 piece skeletal covering produced by fusion of their skeletal ossicles |
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Class Holothuroidea
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sea cucumbers
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lack spines but have microscopie ossicles
upon disturbance, they will spit out their internal organs |
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Class Asteroidea
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starfish or sea stars
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central disc with five arms or rays
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Phylum Chordata
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notochord
hollow dorsal nerve cord pharyngeal gill slits postanal tail |
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Subphylum Urochordata
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tunicates
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sessile filter feeders
adults possess pharyngeal gill slits |
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Subphylum Cephalochordata
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lancelets
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eel-shaped animals
display all 4 characteristics as adults filter feed |
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Subphylum Vertebrata
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have vertebrae that form spinal column
endoskeleton clearly defined brain, encased in skull |
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Class Osteichthyes (subphylum vertebrata)
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bony fish
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Class Mammalia (subphylum vertebrata)
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class we are in
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skull
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fused structure formed by several bones
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divided into cranial and facial portions
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Facial Bones
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MANDIBLE, MAXILLA, premaxilla, nasal, malar, lacrimal, and vomer
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teeth are located on mandible, maxilla, or premaxillary bones
cheekbone is formed by zygomatic arch |
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foramina
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conspicuous holes in some bones
allow passage of blood vessels and nerves through bones of skull |
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