LAB: Craniates Part 2 Flashcards

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1
Q

Craniates Part 2

A
  • vertebrates that have limbs with digits
  • arose from lobe-finned fish
  • endoskeleton of bone
      1. Axial - skull and vertebrate column
      1. Appendicular - girdles
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2
Q

Amphibians

A
  • transitional b/w water and higher land groups
  • Dual life cycle - water/land
  • Anamniotic eggs - lack shell
  • Undergo metamorphosis
  • ​Ectothermic
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3
Q

​Frogs

A

lacks tails, vocalize

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4
Q

​Toads

A
  • Warty skin (glands)
  • parotoid gland ​produce defense chemicals
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5
Q

Salamanders and Newts

A
  • Have elongated tails
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6
Q

Amniotes

A
  • Embryos has extra embryonic membranes
  • Has shell
  • 2 groups
      1. Reptiles
      1. Mammals
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7
Q

Reptiles

A
  • Skin covered by scales/feathers
  • Digits with claws
  • Most have 3 chambered heart
  • Ectotherms
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8
Q

​Crocodilians

A
  • Temperature of nest determines sex
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9
Q

Turtles

A
  • Have 2 part shell:
    • Carapace
    • Plastron
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10
Q

​Squamates

A
  • includes lizards and snakes
  • Snakes
    • ​​kill by constriction, suffocation, venom
    • evolved from lizards
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11
Q

Birds

A
  • are now classified as reptiles
  • evolved from theropod dinosaurs
    • ​​Archaeopteryx
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12
Q

Mammals

A
  • Endothermic
  • Hair
  • Mammary glands, milk
  • 4 Chambered hearts
  • Most live birth with ​placenta
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13
Q

Frog ANATOMY

A
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