Principles of Anatomy and Physiology
15th Edition
ISBN: 9781119329398
Author: Gerard J Tortora, Bryan Derrickson
Publisher: John Wiley & Sons Inc
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Textbook Question
Chapter 20, Problem 27CP
Why is the cardiovascular system one of the first systems to develop?
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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?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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- What is the function of the foramen ovale in the fetal heart? A to increase blood flow to the lungs B to decrease the workload of the left ventricle C to help hold the valves open until the papillary muscles develop D to allow blood to bipass the lungsarrow_forwardWhy is closed circulatory system considered advantageous?arrow_forwardWhat happens when the pressure in the ventricles becomes lower than the pressure in the atria? a-the atrioventricular valves open b-the semilunar valves close c-the semilunar valves open d-the first heart sound occursarrow_forward
- Which chamber of the heart pumps oxygen-poor blood to the lungs?___ Which chamber of the heart pumps oxygen-rich blood out to the bodyarrow_forwardWhy would a fourth chamber heart be evolutionarily advantageous to an animal?arrow_forwardLisbon was told that her baby was born with a hole in the upper chamber of his heart.Is this something Lisbon should worry about? Explain your answer.arrow_forward
- The Greek anatomist Erasistratus, originally from Ceos, identified the correct function of the right atrioventricular valve of the human heart, which was to prevent backward flow of blood from: the right ventricle to the right atrium the right ventricle to the left ventricle the right ventricle to the left atrium the left ventricle to the right ventricle the left ventricle to the left atriumarrow_forwardWho explained about the blood circulation for the first time?arrow_forwardDoes the sheep and human have the structure of heart listed below? If not what structures does human have that a sheep does not have or vice versa?arrow_forward
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license