Anatomy and Physiology - MasteringA&P Access
5th Edition
ISBN: 9780321887917
Author: Marieb
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 1RQ
When the semilunar valves are open, which of the following are occurring? (a) 2, 3, 5, 6, (b) 1, 2, 3, 7, (c) 1, 3, 5, 6, (d) 2, 4, 5, 7.
_____(1) coronary arteries fill
_____(2) AV valves are closed
_____(3) ventricles are in systole
_____(4) ventricles are in diastole
_____(5) blood enters aorta
_____(6) blood enters pulmonary arteries
_____(7) atria contract
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Chapter 17 Solutions
Anatomy and Physiology - MasteringA&P Access
Ch. 17 - The heart is in the mediastinum. Just what is the...Ch. 17 - From inside to outside, list the layers of the...Ch. 17 - What is the purpose of the serous fluid inside the...Ch. 17 - What is the function of the papillary muscles and...Ch. 17 - Which side of the heart acts as the pulmonary...Ch. 17 - Which of the following statements are true? (a)...Ch. 17 - Prob. 7CYUCh. 17 - For each of the following, state whether it...Ch. 17 - Cardiac muscle cannot go into tetany. Why?Ch. 17 - Which part of the intrinsic conduction system...
Ch. 17 - Describe the electrical event in the heart that...Ch. 17 - The second heart sound is associated with the...Ch. 17 - If the mitral valve were insufficient, would you...Ch. 17 - During the cardiac cycle, there are two periods...Ch. 17 - Prob. 15CYUCh. 17 - What problem of cardiac output might ensue if the...Ch. 17 - When the semilunar valves are open, which of the...Ch. 17 - The portion of the intrinsic conduction system...Ch. 17 - An ECG provides information about (a) cardiac...Ch. 17 - The sequence of contraction of the heart chambers...Ch. 17 - The fact that the left ventricular wall is thicker...Ch. 17 - Prob. 6RQCh. 17 - In the heart, which of the following apply? (1)...Ch. 17 - The activity of the heart depends on intrinsic...Ch. 17 - Freshly oxygenated blood is first received by the...Ch. 17 - Describe the location and position of the heart in...Ch. 17 - Describe the pericardium and distinguish between...Ch. 17 - Trace one drop of blood from the time it enters...Ch. 17 - (a) Describe how heart contraction and relaxation...Ch. 17 - The refractory period of cardiac muscle is much...Ch. 17 - (a) Name the elements of the intrinsic conduction...Ch. 17 - Draw a normal ECG pattern. Label and explain the...Ch. 17 - Define cardiac cycle, and follow the events of one...Ch. 17 - What is cardiac output, and how is it calculated?Ch. 17 - Discuss how the Frank-Starling law of the heart...Ch. 17 - Prob. 1CCSCh. 17 - Prob. 2CCSCh. 17 - Prob. 3CCSCh. 17 - Prob. 4CCSCh. 17 - Prob. 5CCSCh. 17 - Prob. 6CCS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What roles do the chordae tendineae and papillary muscles have in the normal function of the AV valves?arrow_forwardFill in the blank: During ventricular contraction, the A-V valves (tricuspid and bicuspid valves) remain _______________________.arrow_forwardWhy are the tendinous cords required for the proper functioning of the AV valves?arrow_forward
- What is the functional significance of the difference in thickness between the wall of the aorta and the wall of the pulmonary trunk?arrow_forwardWhy is it important that the AV node delay the electricalimpulse moving from the SA node and the atria to theventricles?arrow_forwardThe valves which allow blood to flow from the ventricles into the arteries and not in the opposite direction are: A Semilunar valve and tricuspid valve B Bicuspid and tricuspid valve C A.V valve (Atrioventricular valve) and semilunar valve D Aortic valve and mitral valvearrow_forward
- Fill in the blank: During ventricular relaxation, the A-V valves remain _______________________.arrow_forwardAs blood in the ventricles surges back against the closed AV valves, the first heart sound ("lubb") can be heard. Why does this heart sound occur near the middle of the QRS complex in the ECG?arrow_forwardAs blood in the ventricles surges back against the closed AV valves, the first heart sound lubb can be heard.Why does this heart sound occur near the middle of the QRS complex in an ECG?arrow_forward
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