The Sliding Filament Theory Is the Proposed Method by Which

The sliding filament theory is the proposed method by which muscle contraction occurs after neural activation. During this process, what occurs within the muscle fiber after the myosin heads attach to the actin filament?

A) Actin filament is pulled across the myosin
B) Chemical messengers transfer the electrical impulse to the muscle
C) Neurotransmitters attach at receptor sites
D) Action potentials transmit impulses

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