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Muscular System Worksheet - Free Printable School Worksheets

a. Involuntary muscles are under your conscious control. b. Skeletal muscles cover your skeleton, giving your body its shape. c. Skeletal muscles pull in two directions. 2. How do muscles work in pairs? a. The pair relaxes and contracts at the same time during the movement. b. One muscle relaxes to pull the bone while the other contracts. c.