 BIO202_MH_V3  Topic 2: Cardiovascular System: The Heart LATEST |ALL ANSWERS VERIFIED 100%

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BIO202_MH_V3  Topic 2: Cardiovascular System: The Heart Started on Thursday, October 21, 2021, 12:55 AM State Finished Completed on Thursday, October 21, 2021, 1:18 AM Time taken 22 mins 51 se... cs Grade 40.00 out of 40.00 (100%) Question 1 Correct 2.00 points out of 2.00 Flag question Question text Which of the following events occurs first? Select one: a. threshold b. depolarization c. early repolarization d. final repolarization e. pacemaker potential Question 2 Correct 2.00 points out of 2.00 Flag question Question text Which of the following is a function of the heart skeleton? Select one: a. Provides electrical insulation between the atria and ventricles. b. Supplies support and reinforcement for the valves. c. Provides a rigid site for cardiac muscle attachment. d. All of the choices are functions of the heart skeleton. Question 3 Correct 2.00 points out of 2.00 Flag question Question text Excess potassium ions in cardiac tissue cause Select one: a. an increased heart rate. b. a rapid repolarization of cardiac cells. c. a decrease in the frequency of action potentials in the conduction system. d. an increase in stroke volume. e. an increase in the frequency of action potentials. Question 4 Correct 2.00 points out of 2.00 Flag question [Show More]

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