Name ________________________ Skeletal and Muscular System ...
6. Read the section called, Interacting With Other Systems. What do the smooth muscles that line your digestive system do? To answer questions 7 and 8 click here and read the sentences under Science Factfile. 7. Muscles work in a very simple way. All they do is tighten up--that is, _____--and_____. 8. Muscles can only _____. ................
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