PRIN OF ANATOMY & PHYS 16E W/ WILEYPLUS
16th Edition
ISBN: 9781119662730
Author: 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
PRIN OF ANATOMY & PHYS 16E W/ WILEYPLUS
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?Ch. 20 - Gerald recently visited the dentist. During the...Ch. 20 - 2. Unathletic Sylvia resolves to begin an exercise...Ch. 20 - 3. Mr. Perkins is a large, 62-year-old man with a...
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Similar questions
- A 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_forwardWhat three factors determine stroke volume? How does the stroke volume differ with each factor?arrow_forward
- There 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_forwardList and briefly explain the 3 factors that affect SV: preload, contractility and afterloadarrow_forward
- Explain the following terms: Preload, contractility, afterloadarrow_forwardDefine 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_forward
- Having been lost in the desert for 2 days without water, Robert is badly dehydrated. What would be the impact on his stroke volume, heart rate and mean arterial pressure? Explain reasoning for each.arrow_forwardWhat effect does a drug have that block the calcium channel in a cardiac muscle cells? What is the direct effect on the stroke volume?arrow_forwardThe end systolic volume from an individual’s heart was found to be 50 ml, the end diastolic volume was found to be 110 ml and the heart rate was 90 bpm. What is this individual’s stroke volume, ejection fraction and cardiac output (C.O)? Group of answer choices SV = 60 ml Ejection Fraction = 50% C.O = 3.4 l/min SV = 110 ml Ejection Fraction = 52% C.O = 4.4 l/min SV = 60 ml Ejection Fraction = 55% C.O = 5.4 l/min SV = 160 ml Ejection Fraction = 70 % C.O = 6.4 l/minarrow_forward
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