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1/23/2020PhysioEx Exercise 6 Activity 51/4PhysioEx Lab ReportExercise 6: Cardiovascular PhysiologyActivity 5: Examining the Effects of Various Ions on Heart RateName: Alaa AlsmadiDate: 23 January 2020Session ID: session-2c109658-017d-1958-b3a4-785f0f3aa7daPre-lab Quiz ResultsYou scored 100% by answering 4 out of 4 questions correctly.Experiment ResultsPredict QuestionsStop & Think QuestionWhich organelle in the cardiac muscle cell stores calcium?1Verapamil is a calcium-channel blocker. Its effects could be described as2When the cardiac muscle cell is at rest, where is most of the potassium found?3