PHYSIOLOGY
MUSCLE STRUCTURE FUNCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the function of Ca++ during a skeletal muscle contraction?
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Connecting to nebulin
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Connecting to tropomyosin
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Connection to myosin
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Connecting to troponin
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Explanation:
Detailed explanation-1: -(2) Calcium binds to troponin C, which induces a conformational change in the troponin complex. This causes tropomyosin to move deeper into the actin groove, revealing the myosin-binding sites.
Detailed explanation-2: -Troponin C (TnC) is the calcium-binding subunit of the muscle protein complex troponin. Binding of calcium ions to TnC triggers the contraction of vertebrate striated muscle [I, 21.
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