BY2 gowerton

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  • Created by: molly
  • Created on: 09-05-13 12:37
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  • Dentition
  • Grazing Herbivores (sheep/cow)
    • Dentition
    • teeth modified to ensure tough plant material, that is hard to digest, is thoroughly ground up before swallowing.
    • incisors on lower jaw only that cut against a horny pad, on the upper jaw.  (canines are  indistinguishable from incisors).
  • diastema (gap) separates front teeth from side teeth / premolars. tongue then manipulates the plant material, in this gap, to the large cheek teeth.
    • Grazing Herbivores (sheep/cow)
      • teeth modified to ensure tough plant material, that is hard to digest, is thoroughly ground up before swallowing.
      • incisors on lower jaw only that cut against a horny pad, on the upper jaw.  (canines are  indistinguishable from incisors).
  • jaw movement - circular grinding action in a horizontal plane.
    • cheek teeth interlock - over time surfaces become worn, exposing sharp edged enamel ridges, increasing grinding effect.
      • open unrestricted roots- grow throughout the mammal's life

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