chapter 34 vertebrates

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junderwo
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82520
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chapter 34 vertebrates
Updated:
2011-04-28 19:21:21
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TERMS
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TERMS
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  1. amniotic egg
    shelled egg in which an embryo develops within a fluid-filled amniotic sac and nourished by yolk.
  2. ectothermic
    external sources provide most ofthe heat for temperature regulation
  3. endothermic
    internal sources that provide most of the heat for temp regulation
  4. endoskeleton
    hard skelleton burried within the soft tissues of an animal.
  5. eutherians
    Placental mammal; young complete their embryonic development within their nucleus.
  6. mammary gland
    exocrine glands that secret milk to nourish young.
  7. marsupials
    a mammal whose young complete their embryonic development in side a maternal pouch called the marsupium
  8. operculum
    in aquatic, a protective body flap that covers and protects the gills.
  9. placental
    structure in pregnant uterus for nourishing a viviparous fetus with the mother's blood supply.
  10. mammals
    amniotes with mammary glands
  11. swim bladder
    An aqueous osteichthyans, an air sac that enables the animal to control its boyancy in the water.
  12. Tetrapod
    A vertebrate with 2 pairs of limbs
  13. Ovipary
    refering to a type of development in which young hatch from eggs that are retained outside the mother's body.
  14. vivipary
    young are borne alive after having being nervous in the uterus by blood from the placenta.

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