week 5 Flashcards
(3 cards)
1
Q
what are jaws useful for
A
- feeding
- defense
- communication
- breathing
- grasping
2
Q
what are gnathostomes
A
- vertebrates with jaws
- include most fish and all tetrapods
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