True:  The circulatory system delivers oxygen-rich blood to your bones.​, Adults have 206 bones., Muscles are made up of muscle fiber.​, When the muscle activates or bunches up, it pulls on the tendon.​, False: The skeletal system has 8 major jobs., Babies are born with 209 bones., Muscles take up about 60 % of your weight., The strongest bone in your body is the stapes.,

Skeletal System and Muscular System!

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