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-What Is the Structure Indicated by the Number 2 in Figure

question 125

Multiple Choice

-What is the structure indicated by the number 2 in Figure 12.1 and what is its functional significance? A) H zone : area of myosin not overlapped by actin B) M line : where the tails of the myosin molecules are bound to one another C) Z line : anchors the thin filaments together D) sarcomere : the functional unit of muscle contraction whose length is changed as a muscle shortens and lengthens E) A band : length of myosin attached to an M line
-What is the structure indicated by the number 2 in Figure 12.1 and what is its functional significance?

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