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प्रश्न
Short Answer Type Question:
How do the muscles work?
अंतर स्पष्ट करें
एक पंक्ति में उत्तर
उत्तर
The muscles work in pairs. When one of them contracts, the bone is pulled in that direction, the other muscle of the pair relaxes. To move the bone in the opposite direction, the relaxed muscle contracts to pull the bone towards its original position, while the first relax. A muscle can only pull. It cannot push.
Muscles work in pairs
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Human Body and Its Movements
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