Principles of Anatomy and Physiology
14th Edition
ISBN: 9781118345009
Author: Gerard J. Tortora
Publisher: WILEY
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Textbook Question
Chapter 20, Problem 22CP
Define cardiac reserve. How does it change with training or with heart failure?
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Discuss what causes the change in heart rate and pulse rate with exercise.
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Chapter 20 Solutions
Principles of Anatomy and Physiology
Ch. 20 - l. Define each of the following external features...Ch. 20 - 2. Describe the structure of the pericardium and...Ch. 20 - 3. What are the characteristic internal features...Ch. 20 - Prob. 4CPCh. 20 - 5. What is the relationship between wall thickness...Ch. 20 - Prob. 6CPCh. 20 - What causes the heart valves to open and to close?...Ch. 20 - In correct sequence, which heart chambers, heart...Ch. 20 - Prob. 9CPCh. 20 - Prob. 10CP
Ch. 20 - 11. In what ways are autorhythmic fibers similar...Ch. 20 - What happens during each of the three phases of an...Ch. 20 - 13. In what ways are ECGs helpful in diagnosing...Ch. 20 - How does each ECG wave, interval, and segment...Ch. 20 - 15. Why must left ventricular pressure be greater...Ch. 20 - Prob. 16CPCh. 20 - During which two periods of the cardiac cycle do...Ch. 20 - Prob. 18CPCh. 20 - Prob. 19CPCh. 20 - Prob. 20CPCh. 20 - Prob. 21CPCh. 20 - Define cardiac reserve. How does it change with...Ch. 20 - Prob. 23CPCh. 20 - 24. What are some of the cardiovascular benefits...Ch. 20 - Prob. 25CPCh. 20 - Prob. 26CPCh. 20 - Why is the cardiovascular system one of the first...Ch. 20 - From which tissue does the heart develop?
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- Why is exercise heart rate crucial during cardiovascular exercise and how does this affect treatment?arrow_forwardDiscuss the regulation of cardiac output during exercise.arrow_forwardDefine cardiac output, describe the factors that influence heart rate and stroke volume, and explain how adjustments in stroke volume and cardiac output are coordinated at different levels of physical activity.arrow_forward
- Integrate the factors that determine stroke volume and heart rate?arrow_forwardExplain briefly what happens to your heart rate before and after performing an exercise? Why does your heart rate change before and after performing an exercise?arrow_forwardhow does cardiovascular training impact changes to the heart structure ?arrow_forward
- Describe the effect of exercise on cardiac outputarrow_forwardDescribe the physiology behind the change in blood pressure and heart rate change after exercisearrow_forwardg. An individual has a stroke volume of 60 ml, End systolic volume of 50 ml, and a heart rate of 65 bpm. Calculate the following: i. Cardiac Output (CO) = ii. End diastolic volume (EDV) = iii. Ejection fraction (%) =arrow_forward
- To check- in Heart electrical activity use blood pressure :Select one True Falsearrow_forwardExplain why afterload is critical in cardiac function and maintaining long-term heart health (i.e. heart failure). Hint: Decreased output, by itself, not lead to heart failure.arrow_forwardDefine cardiac output, and explain how it is influenced by both heart rate and stroke volume.arrow_forward
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