The protein in cardiac muscle fibers that regulates contraction is:

Name: The protein in cardiac muscle fibers that regulates contraction is:
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Question

Quizplus · Accepted Answer

Troponin is the regulatory protein found in cardiac muscle fibers that binds to calcium ions and initiates contraction. This happens when the troponin complex undergoes a conformational change that moves tropomyosin and exposes the actin-binding sites on the actin filaments. Therefore, D is the correct answer.

The Protein in Cardiac Muscle Fibers That Regulates Contraction Is