animal design

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locomotor

Last updated 10:20 AM on 8/9/26
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5 Terms

1
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what does the locomotor system need to do?

  • support body mass

  • move centre of mass

  • move limbs

2
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what features support speed and agility?

  • muscle bulk

  • body mass

  • bodily arrangement

  • grippy footwear

3
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tendon in carnivore vs herbivore

  • in carnivores, tendons split to go into individual digits and are thin and short

  • in herbivores everything below the level of the carpus is all tendon no muscle. Thick and robust

4
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lengthening of the distal limb

  • key characteristic of quadrupedal herbivores

  • plantigrade, digitigrade, unguligrade- gradual lenghtening

  • longer steps to cover more ground

  • run fast

  • distal limb is also lightened

  • lose digits- lighter weight

<ul><li><p>key characteristic of quadrupedal herbivores</p></li><li><p>plantigrade, digitigrade, unguligrade- gradual lenghtening</p></li><li><p>longer steps to cover more ground</p></li><li><p>run fast</p></li><li><p>distal limb is also lightened</p></li><li><p>lose digits- lighter weight</p></li></ul><p></p>
5
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pectoral girdle

  • joining of the forelimb to the body

  • quadrupedal herbivores have no clavicle

  • only thing anchoring scapula to the rib cage is muscle

  • this means scapula is not resricted in motion by the clavicle