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Now, the way that our muscles work and a lot of other organisms muscles work is that they work in opposite pairs.
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So they name for these pairs of muscles that work in opposition of one another are called an agnostic muscles.
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Now, this is very important for just our basic day -to -day functioning, and i'll give you an example to help you picture this.
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Say, for example, take your arm.
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Your arm can do two things.
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You can extend your arm outward, not talking about shoulder movement, but just your arm.
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Arm.
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You can extend it outward.
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So we have extensor muscles, which the major group of that are your triceps, which anatomically speaking are your triceps brachiae.
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And then you can also flex your arm back towards you.
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So you can extend it outwards or you can flex it towards you.
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So we have a group of muscles called flexors...