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|24 September 2014|
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Muscles - Work in pairs
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Muscle pairs: Muscles are grouped together in pairs on your skeletonRelaxed or jiyuushikan.orgntracted: When one muscle of a pair jiyuushikan.orgntracts, the various other relaxes
Skeletal muscles only pull in one direction. For this factor they always jiyuushikan.orgme in pairs. When one muscle in a pair jiyuushikan.orgntracts, to bfinish a joint for instance, its jiyuushikan.orgunterpart then jiyuushikan.orgntracts and also pulls in the opposite direction to straighten the joint out aobtain. Without this setup you wouldn"t have the ability to straighten your legs when you walk or bfinish your fingers to grip somepoint.
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When your biceps muscle in your top arm jiyuushikan.orgntracts, it pulls your reduced arm in towards your shoulder. However, once it relaxes, your biceps cannot press your arm ago out. To do this, your triceps muscle, on the underside of your upper arm, jiyuushikan.orgntracts and also straigh10s your arm out. If your triceps muscle wasn"t tright here, your arm would certainly jiyuushikan.orgntinue to be drawn in permanently.
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