Fill in the Blank QuestionFill in the blank question.Dense bodies and dense areas in smooth muscle are equivalent to disks in skeletal muscle.
Question
Solution
Dense bodies and dense areas in smooth muscle are equivalent to Z-discs in skeletal muscle.
In skeletal muscle, Z-discs serve as the structural boundaries of the sarcomere, anchoring the actin filaments and providing a point of attachment for the myofibrils. Similarly, in smooth muscle, dense bodies play a crucial role in anchoring the actin filaments to the cell membrane and maintaining the structural integrity of the muscle cell during contraction. Thus, both dense bodies in smooth muscle and Z-discs in skeletal muscle function as important structural components that facilitate muscle contraction.
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