Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 4MC
During atrial systole,
a. the atrial pressure exceeds ventricular pressure.
b. 70 percent of ventricular filling occurs.
c. the AV valves are open.
d. valves prevent backflow into the great veins.
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During diastole:
A. the AV-valves are open and the aortic & pulmonary arterial
valves are closed.
B. all valves are open.
C. all valves are closed.
D. the AV-valves are closed and the aortic & pulmonary
arterial valves are open.
E. None of the above is correct.
When the ventricles contract, all of the following occur excepta. closing of the AV valves.b. blood ejecting into the pulmonary trunk and aorta.c. closing of the semilunar valves.d. opening of the semilunar valves.
Within the T-P interval of the EKG...
a. The 2nd heart sound is heard
b. the semilunar valves are open
c. Ventricular pressure is higher than atrial pressure
d. Ventricular cardiomyocytes are relaxed
e. L-type calcium current is dominant in the ventricular cardiomyocytes
Chapter 11 Solutions
Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 11 - More than one choice may apply. Pulmonary veins...Ch. 11 - Given a volume of 150 ml at the end of diastole, a...Ch. 11 - Which of the following depolarizes next after the...Ch. 11 - During atrial systole, a. the atrial pressure...Ch. 11 - 5. Atrial repolarization coincides in time with...Ch. 11 - Soon after the onset of ventricular systole, the...Ch. 11 - The base of the heart is its ______ surface. a....Ch. 11 - 8. In comparing a parallel artery and vein, you...Ch. 11 - Prob. 9MCCh. 11 - Prob. 10MC
Ch. 11 - Prob. 11MCCh. 11 - 12. Which layer of the artery wall thickens most...Ch. 11 - Which of the following are associated with aging?...Ch. 11 - An increase in BP would be caused by all of the...Ch. 11 - The most external part of the pericardium is the...Ch. 11 - Prob. 16MCCh. 11 - Prob. 17MCCh. 11 - Prob. 18MCCh. 11 - 19. Draw a diagram of the heart showing the three...Ch. 11 - Prob. 20SAECh. 11 - Prob. 21SAECh. 11 - 22. Define systole and diastole.
Ch. 11 - Prob. 23SAECh. 11 - Prob. 24SAECh. 11 - Prob. 25SAECh. 11 - 26. Name three different factors that increase...Ch. 11 - Prob. 27SAECh. 11 - Describe the structure of capillary walls.Ch. 11 - Prob. 29SAECh. 11 - Name three factors that are important in promoting...Ch. 11 - Prob. 31SAECh. 11 - Trace a drop of blood from the left ventricle of...Ch. 11 - Prob. 33SAECh. 11 - 34. In a fetus, the liver and lungs are almost...Ch. 11 - Prob. 35SAECh. 11 - Prob. 36SAECh. 11 - Prob. 37SAECh. 11 - 38. Two elements determine blood pressure—the...Ch. 11 - Prob. 39SAECh. 11 - Prob. 40SAECh. 11 - Prob. 41SAECh. 11 - Explain why blood flow in arteries is pulsatile...Ch. 11 - Explain the relationship between the...Ch. 11 - 44. Which type of blood vessel is most important...Ch. 11 - Prob. 45SAECh. 11 - John is a 30-year-old man who is overweight and...Ch. 11 - 47. Mrs. Hamad, a middle-aged woman, is admitted...Ch. 11 - Hannah, a 14-year-old girl undergoing a physical...Ch. 11 - Prob. 49CTCh. 11 - Prob. 50CTCh. 11 - Mr. Grimaldi was previously diagnosed as having a...Ch. 11 - Prob. 52CTCh. 11 - The guards at the royal palace in London stand at...
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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
- Which of the following statements is true about the SA (sinoatrial) node? a. The action potential created by the pacemaker cells of the SA node directly stimulates the contractile cells of both the atria and ventricles. b. The rate of spontaneous depolarization of nodal cells is the fastest in the SA node. c. Pacemaker cells in the SA node form a pathway between the SA and AV nodes. d. The pacemaker cells, which establish the heart rate, are located only in the SA node.arrow_forwardPressure in the aorta is at its lowest a. at the time of the first heart sound. b. at the time of the second heart sound. c. just before the AV valves open. d. just before the semilunar valves openarrow_forwardThe _____ prevent the AV valves from bulging into the atria during ventricular systole. a. tendinous cords b. pectinate muscles c. trabeculae carneae d. AV nodes e. cuspsarrow_forward
- An ECG measures a. changes in electrical potential during the cardiac cycle. b. Ca2+ concentration of the ventricles in diastole. c. the force of contraction of the atria during systole. d. the volume of blood being pumped during the contraction cycle.arrow_forwardMatch the following: ? Prevents backflow into the left ventricle ? Prevents backflow into the right atrium ? Prevents backflow into the left atrium ? Prevents backflow into the right ventricle A. Aortic semilunar valve B. Mitral (bicuspid) valve C. Tricuspid valve D. Pulmonary semilunar valvearrow_forwardThe following is correct about valvular structures A. The AV valves are the structures that divide the upper atria from the lower ventricles B. The pulmonic vale separates the left ventricle from the system circulation C. The tricuspid valve separates the left atrium from the left ventricle D. The mitral valve separates the right atrium from the right ventricle Choose the correct answerarrow_forward
- Korotkoff sounds indicate: A. Regurgitation from the ventricle into the atrium through a faulty mitral valve. B. Backflow through the tricuspid valve. C. Turbulence in a malformed aortic arch. D. Systolic and diastolic viscosity. E. Opening and closing of an artery.arrow_forwardPressure in the aorta is at its lowesta. at the time of the first heart sound.b. at the time of the second heart sound.c. just before the AV valves open.d. just before the semilunar valves openarrow_forwardRefer to the figure of the pressures in the cardiac cycle on the right side. Letters indicate time points and numbers indicate 2 different pressures. The pressure indicated by line #1 (in green) is.... A. Atrial pressure B. Pulmonary trunk/artery pressure C. Aortic pressure D. Ventricular pressurearrow_forward
- The “lubb” sound (first heart sound) is caused by thea. closing of the AV valves.b. closing of the semilunar valves.c. blood rushing out of the ventricles.d. filling of the ventricles.e. ventricular contraction.arrow_forwardWhich of the following is/are true concerning the opening and closing of the cardiac valves? A. valves operate according to the pressures on either side of the valve B. valve operation is constantly being controlled by the medulla oblongata C. valve operation is determined directly by the cardiac action potential (electrical currents control the opening and closing of the valves.) D. valve operation is directly controlled by the papillary muscles within the ventricular wall. E. None of the above is correct.arrow_forwardDuring the period of isovolumic contraction: A. the AV-valves are open and the aortic & pulmonary arterial valves are closed. B. all valves are open. C. all valves are closed. D. the AV-valves are closed and the aortic & pulmonary arterial valves are open. E. None of the above is correct.arrow_forward
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