Labels:apparel | book | bulletin board | colostrum | earth | ligament | person | sky OCR: How MUSCLES ORK OUR MUSCL FS cause your body to pull, they cannot push, so for every move bi contracting when they are muscle that causes mo vement there triggered by nerve messages. When another to undo it One muscle skeletal muscles that are attached bends your leg, for example. and bones contract, they pull on the bones another pulls to straig] hten it These and the body moves Muscles only muscle pairs are called antagonists Tendon Biceps muscle Muscle Bends arm fibres Nerve-muscle junction Triceps muscle Stra ightens arm Low er arm How your arm bones muscles work Upper arm bone uscle
