Sarcomeresare the fundamental contractile unit of skeletal muscle and are characterized by their highly ordered appearance under a polarizing light microscope Thick filaments in the A bandare composed primarily of the protein myosin. Each myosin moleculeis composed of
Correct Answer: Six monomers
Description: Sarcomeresare the fundamental contractile unit of skeletal muscle and are characterized by their highly ordered appearance under a polarizing light microscope
Thick filaments
Thick filaments in the A band are composed primarily of the protein myosin. Each myosin molecule is composed of six monomers: two protein strands intertwined in a helical arrangement (termed heavy chains) and four smaller, globular proteins (termed myosin light chains).
Thin filaments
Thin filaments are composed of three primary proteins: actin, tropomyosin, and troponin
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