PHYSIOLOGY
MUSCLE CONTRACTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The Ions that are responsible for activating Troponin and twisting Tropomyosin.
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Sodium
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Calcium
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Potassium
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Magnesium
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Explanation:
Detailed explanation-1: -Troponin plays a central role in the calcium-regulation of muscle contraction: Troponin is the sole calcium-binding component of thin filaments (actin-tropomyosin-troponin complex) of striated muscles. Thin filaments without troponin support contraction irrespective of calcium concentration.
Detailed explanation-2: -Calcium then binds to troponin as described above, initiating the contraction process.
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