Principles of Anatomy and Physiology
14th Edition
ISBN: 9781118345009
Author: Gerard J. Tortora
Publisher: WILEY
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Question
Chapter 20, Problem 20CP
Summary Introduction
To review:
The definition of stroke volume (SV) and the factors that regulate it.
Introduction:
A large amount of blood moves out from the ventricles into the arteries (aorta in the left ventricle and pulmonary artery in the right ventricle) during ventricular systole or depolarization. The blood from the aorta is supplied to distant parts of the body.
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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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Similar questions
- Which are the major factors responsible for limiting the increase in stroke volume?arrow_forwardA person has an ejection fraction of 54% and an EDV of 130 mL. a) what is their stroke volume b) if they have a heart rate of 65 beats per minute, what is the cardiac output? c) If they increase their ED to 170 mL, what do you expect might happen to their ejection fraction (improve, stay the same or get worse)? Why- be complete in your answer. d) What law is this? e) How might the EDV be increased? Give at least one mechanism in detailarrow_forwardAs the stroke volume index increases or decreases, the cardiac index also increases or decreases. True or false? Explain?arrow_forward
- What three factors determine stroke volume? How does the stroke volume differ with each factor?arrow_forwardThere are three major factors that affect stroke volume and therefore affect cardiac output: afterload, preload, and contractility. Select two of these factors and explain how and why each affects cardiac output.arrow_forwardThere are three major factors that affect stroke volume and therefore affect cardiac output: afterload, preload, and contractility. Explain how and why each of these factors affects cardiac output. Each answer must explain what the factor is as well as how it affects cardiac output.arrow_forward
- Define pulse pressure and explain the physiological significance of this measurement.arrow_forwardIf an IV of RL is running at 22 gtt/min and the drop factor is 15 gtt/mL, what is the flow rate?Indicate the quantity and unit of measure where specified. Quantity: Unit:arrow_forwardCalculate CO (cardiac output) if given HR and SV.arrow_forward
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