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Title: How do the muscles in your arm extend your arm outward? Post by: kajumbi on Oct 11, 2016 How do the muscles in your arm extend your arm outward?
A) The muscles in your arm push on the bones causing your arm to extend. B) The muscles in your arm relax and the tendons pull the arm straight. C) Some muscles in your arm relax and others contract, pulling the arm straight. D) The top half of your bicep wraps around underneath the elbow like a rope over a pulley. When it contracts, the arm is pulled out straight. Title: Re: How do the muscles in your arm extend your arm outward? Post by: SKD on Oct 11, 2016 Content hidden
Title: Re: How do the muscles in your arm extend your arm outward? Post by: kajumbi on Oct 13, 2016 Now I feel like dancing! lol
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