In smooth muscle,actin and myosin filaments: A)Are organized into sarcomeres and aligned in a striated pattern. B)Overlap,with the actin filaments anchored at dense bodies. C)Overlap and contain a tropomyosin-troponin complex on the actin filament. D)Require phosphorylation of the myosin heavy chain to initiate muscle contraction. E)Typically generate contractile force in the absence of cytosolic Ca⁺⁺.

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In smooth muscle, actin and myosin filaments overlap with the actin filaments anchored at dense bodies. Smooth muscle lacks sarcomeres and a striated pattern.

In Smooth Muscle,actin and Myosin Filaments