DATA ANALYSIS 1. What electrical and mechanical events correlate to the P wave? The QRS complex? The T wave? 2. During which ECG interval does filling of the ventricles occur? During which ECG interval does ejection occur? What is systole and diastole? 3. Describe the path an action potential travels during one cardiac cycle. 4. Describe the flow of blood through the heart and the subsequent flow through the body. 5. What changes occurred in heart rate as position changes from lying down to sitting up? Describe the physiological mechanisms causing these changes. 6. What percentage of the resting cardiac cycle is systole and what percentage is diastole? How did this percentage change with exercise? Explain.
DATA ANALYSIS 1. What electrical and mechanical events correlate to the P wave? The QRS complex? The T wave? 2. During which ECG interval does filling of the ventricles occur? During which ECG interval does ejection occur? What is systole and diastole? 3. Describe the path an action potential travels during one cardiac cycle. 4. Describe the flow of blood through the heart and the subsequent flow through the body. 5. What changes occurred in heart rate as position changes from lying down to sitting up? Describe the physiological mechanisms causing these changes. 6. What percentage of the resting cardiac cycle is systole and what percentage is diastole? How did this percentage change with exercise? Explain.
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter40: The Circulatory System
Section: Chapter Questions
Problem 11RQ: The heart's internal pacemaker beats by: an internal implant that sends an electrical impulse...
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