An Increase in Intracellular Calcium Ion Results in Myocardial Contraction,because

question 17

Multiple Choice

An increase in intracellular calcium ion results in myocardial contraction,because calcium

• A) activates membrane calcium pumps.
• B) binds troponin, causing actin-binding sites to be exposed.
• C) increases affinity of myosin for actin cross-bridge sites.
• D) promotes ATP synthesis.

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