LAB: Craniates Part 2 Flashcards Preview

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Flashcards in LAB: Craniates Part 2 Deck (13)
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1

Craniates Part 2

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

2

Amphibians

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

3

​Frogs

lacks tails, vocalize

4

​Toads

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

5

Salamanders and Newts

  • Have elongated tails

6

Amniotes

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

7

Reptiles

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

8

​Crocodilians

  • Temperature of nest determines sex

9

Turtles

  • Have 2 part shell:
    • Carapace
    • Plastron

10

​Squamates

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

11

Birds

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

12

Mammals

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

13

Frog ANATOMY