In Smooth Muscle,most of the Calcium Needed for Muscle Contraction

question 142

Multiple Choice

In smooth muscle,most of the calcium needed for muscle contraction

• A)is in the dense bodies.
• B)enters from extracellular fluid.
• C)is attached to the intermediate filaments.
• D)must be activated by myosin kinase.
• E)is stored in the sarcoplasmic reticulum.

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