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Which 'study break' activity do you find most distracting?
Talking / texting
Playing video games
Listening to music
Watching TV
Browsing the web
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Previous poll results: Where do you get your textbooks?
Actions of flexors and extensors.
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The figure shows how muscles cause flexion or extension of a limb in an animal with an endoskeleton. When the flexor muscle contracts, the extensor relaxes, and vice versa.
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