In Smooth Muscle,actin and Myosin Filaments

Multiple Choice

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⁺⁺.