18. The Heart
Electrical Conduction System of the Heart
Problem 15a
Textbook Question
Textbook QuestionThe activity of the heart depends on intrinsic properties of cardiac muscle and on neural factors. Thus, a. vagus nerve stimulation of the heart reduces heart rate, b. sympathetic nerve stimulation of the heart decreases time available for ventricular filling, c. sympathetic stimulation of the heart increases its force of contraction, d. all of the above.
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