Name: Dondrell Seals Exercise 6: Cardiovascular Physiology: Activity 5: Examining the Effects of Various Ions on Heart Rate Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which organelle in the cardiac muscle cell stores calcium? You correctly answered: b. sarcoplasmic reticulum 2. Verapamil is a calcium-channel blocker. Its effects could be described as You correctly answered: d. negative chronotropic and negative inotropic. 3. When the cardiac muscle cell is at rest, where is most of the potassium found? You correctly answered: c. in the cytosol 4. Resting cardiac muscle cells are most permeable to You correctly answered: b. potassium. 02/21/19 page 1
02/21/19 page 2 Experiment Results Predict Question: Predict Question 1: Because calcium-channel blockers are negative chronotropic and negative inotropic, what effect do you think increasing the concentration of calcium will have on heart rate?
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- Spring '16