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Transcript
Activity 5.2.1
 Bones -
Remarkable example of engineering combining light
weight, flexibility and incredible strength.
 lb per lb stronger then concrete
 Every 7 years a healthy body completely replaces every bone cell
in the entire body keeping them strong.
 Constantly remodeling
 osteoblast
 osteoclast
 Who in the class has ever broken a bone.
 How does human skeletal system protect us
 Human Body: Pushing the Limits video on strength available at
http://dsc.discovery.com/tv/human-body/explorer/explorer.html.
 Alternatively, view the clip on DVD. The clip is located on the
Strength DVD – Chapter 2 – 1.15.