Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Chapter 11, Problem 17MC
Summary Introduction
Introduction:
The heart is a muscular organ. It is a vital organ of the body, which pumps blood through the blood vessels in the body. In vertebrates, it is separated into four chambers: two ventricles (left and right) and two atria (left as well as right).
The heart comprises four valves that allow blood to flow unidirectionally through the heart and its chambers. There are two sets of valves: the atrioventricular valve and the semilunar valve.
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Students have asked these similar questions
What is responsible for the first heart sound (lub)?
A. Contraction of the atria.
B. Contraction of the ventricles
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Which primitive area of the heart will give rise to the right ventricle?
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b. primitive ventricle
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d. truncus arteriosus
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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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- Which heart valve(s) is/are open during the Ejection phase of the cardiac cycle? A. Tricuspid B. Aortic semilunar valve C. Bicuspid D. Both B & Carrow_forwardWhich valve separates the left atrium from the leftventricle?a. mitralb. tricuspidc. pulmonary d. aorticarrow_forwardWhen you measure blood pressure, the Korotkoff sounds (i.e. the sounds heard through a stethoscope) are produced by? A. turbulent blood flow B. valves closing C. ventricular repolarization D. ventricular depolarization?arrow_forward
- In terms of being open or closed, what is the state of the mitral and tricuspid valve (left and right atrioventricular valves respectively) at the end of the first heart sound? a. Mitral is closed, Tricuspid is open b. Mitral is open, Tricuspid is closed c. Both are closed d. Both are openarrow_forwardWhy is it necessary to stimulate papillary muscles in the ventricle slightly earlier than the rest of the ventricular wall myocardium? a. to assure rapid conduction speed of the action potential b. to pull on AV valve cusps to prevent backflow c. to assure blood will surge toward the semilunar valves d. to assure coordinated contraction of the ventricular myocardiumarrow_forwardAt the instant following the second heart sound, which heart valves are open? a. Semilunar (SA) valves only b. Atrioventricular (AV) valves only c. both SA and AV valves d. All valves are closedarrow_forward
- The tricuspid valve lies between the A. Right atrium and the right ventricle B. Left ventricle and the aorta C. Right ventricle and the pulmonary artery D. Left atrium and the left ventriclearrow_forwardComplete ventricular filling occurs during what phase of the cardiac cycle? a. when the atria are in diastole b. when the ventricles are in diastole c. when the ventricles are in systolearrow_forwardThe exchange between the blood and the interstitial fluid occurs most readily through which type of capillary? a. sinusoidal b. continuous c. fenestratedarrow_forward
- How is blood prevented from backflowing from the pulmonary trunk into the right ventricle? a. closing of the right AV valves b. opening of the pulmonary semilunar valve c. contraction of the right atrium d. closing of the pulmonary semilunar valvearrow_forwardIt is important to have the appropriate cuff size when taking the blood pressure. What error may result from a cuff that is too large or too small? a. An incorrect reading b. Injury to the patient c. Prolonged pressure on the arm d. Loss of Korotkoff soundsarrow_forwardIf you consider the anterior interventricular artery if a thrombus forms in the artery, which area of the heart would most likely experience infarct? a. the left ventricle and interventricular septum b. the right atrium c. the right ventriclearrow_forward
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