Calcium Influx into Cardiac Contractile Fibers Is Responsible for All

question 61

Multiple Choice

Calcium influx into cardiac contractile fibers is responsible for all the following EXCEPT

• A) the plateau phase of action potential
• B) the depolarizing phase of action potential
• C) Ca²⁺ release from the sarcoplasmic reticulum
• D) exposing myosin binding sites on actin

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