Vascular smooth muscle is largely dependent on which of the following intracellular ions?

Name: Vascular smooth muscle is largely dependent on which of the following intracellular ions?
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Current understanding suggests that vascular smooth muscle is largely dependent on intracellular calcium ion (Ca²⁺) concentration. Smooth muscle tissue comprises bundles of myofibrils, threadlike contractile fibers encased by the sarcoplasmic reticulum, a network of tubes or channels that store Ca²⁺.

Vascular Smooth Muscle Is Largely Dependent on Which of the Following