22/01/2020, 9 : 48 PM PhysioEx Exercise 6 Activity 5 Page 1 of 4 PhysioEx Lab Report Exercise 6: Cardiovascular Physiology Activity 5: Examining the E ff ects of Various Ions on Heart Rate Name: Daelyn Glasgow- Thomas Date: 22 January 2020 Session ID: session-3d1ce87b-01c7-f554-6f4c-6 ff 6a3bb14fa Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. Experiment Results Predict Questions Which organelle in the cardiac muscle cell stores calcium? You correctly answered: sarcoplasmic reticulum. 1 Verapamil is a calcium-channel blocker. Its e ff ects could be described as Your answer: negative chronotropic and positive inotropic. Correct answer: negative chronotropic and negative inotropic. 2 When the cardiac muscle cell is at rest, where is most of the potassium found? You correctly answered: in the cytosol. 3 Resting cardiac muscle cells are most permeable to You correctly answered: potassium.
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