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____________________ is necessary for,but not sufficient to produce,most behavior changes.
Tropomyosin
A protein that runs along the length of the actin filament in muscle fibers and, along with troponin, regulates muscle contraction.
Sarcoplasmic Reticulum
A network of membranes found within muscle cells that stores and releases calcium ions, aiding in muscle contraction.
Sarcolemma
The cell membrane surrounding a muscle fiber, playing a crucial role in muscle contraction.
Acetylcholine Receptors
Protein receptors located in the neuro-muscular junction and various parts of the nervous system that bind acetylcholine, facilitating neurotransmission.
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