98%(42)41 out of 42 people found this document helpful
This preview shows page 1 - 3 out of 5 pages.
Exercise 6: Cardiovascular Physiology: Activity 5: Examining the Effects of Various Ions on Heart Rate Lab ReportPre-lab Quiz ResultsYou scored 100% by answering 4 out of 4 questions correctly.1. Which organelle in the cardiac muscle cell stores calcium?2. Verapamil is a calcium-channel blocker. Its effects could be described as3. When the cardiac muscle cell is at rest, where is most of the potassium found?4. Resting cardiac muscle cells are most permeable to01/03/13 page 1
01/03/13 page 2Experiment ResultsPredict Question:Predict Question 1: Because calcium-channel blockers are negative chronotropic and negative inotropic, what effect do youthink increasing the concentration of calcium will have on heart rate?