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visceral smooth muscle
composed of sheets of muscles; found in walls of visceral organs; displays rhythmicity
these ions combine with the troponin to change the shape of the tropomyosin so that it bonds with the cross-bridges of the myosin
found between or on the cisternae; function is to transmit a muscle impulse into the cell interior
broad, fibrous sheet of connective tissue that attaches the coverings of adjacent muscles
contains the cross-bridges that join actin at active sites (areas on the surface of actin that contain ADP molecules)
contracts and relaxes more slowly than skeletal muscle; cells lack transverse tubules, have a single nucleus, and is under involuntary control
neurotransmitter released by motor neurons in order to stimulate skeletal muscle fibers
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