week 5 Flashcards

(3 cards)

1
Q

what are jaws useful for

A
  • feeding
  • defense
  • communication
  • breathing
  • grasping
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2
Q

what are gnathostomes

A
  • vertebrates with jaws
  • include most fish and all tetrapods
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3
Q

summarise jaws and skulls

A
  • there are 2 competing hypotheses for jaw origins
    -skulls can be kinetic in many different ways e.g. snakes have very high skull kinesis. crocodiles are akinetic
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