Question

Cardiac muscles contract

Answer 1

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Contraction in cardiac muscle occurs due to the the binding of the myosin head to adenosine triphosphate ( ATP ), which then pulls the actin filaments to the center of the sarcomere, the mechanical force of contraction.

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Answer 2

Answer:

Cardiac muscles fibres contract via excitation contraction coupling using the machanism unique to cardiac muscle called calcium -included calcium release. Excitation contraction coupling described the process of converting and electrical stimulus(action potential) into a mechanical response(muscle contraction)

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