Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Question
Chapter 11, Problem 16MC
Summary Introduction
Introduction:
The heart is a muscular organ, which pumps blood through blood vessels in the body. In vertebrates, it is divided into four chambers: Two atria (left and right) and two ventricles (left and right). It is a very important organ, which is enclosed in a sac called the pericardium.
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What is responsible for the first heart sound (lub)?
A. Contraction of the atria.
B. Contraction of the ventricles
C. Closing of the atrioventricular valves
D. Closing of the semilunar valves
Which side of the heart directs blood to the lungs?
A.left
B. right
C. both right and left
Which primitive area of the heart will give rise to the right ventricle?
a. bulbus cordis
b. primitive ventricle
C. sinus venosus
d. truncus arteriosus
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 chamber has the thickest wall? a. right atrium c. left atrium b. right ventricle d. left ventriclearrow_forwardWhich side of the heart receives blood low in oxygen from the body? A. left B. both right and left C. rightarrow_forwardWhich best describes the location of the atrioventricular node? A. Superior right atrium B. Left ventricle C. Superior left atrium D. Junction of the right and left ventriclesarrow_forward
- Endocarditis is an inflammation of which portion of the heart? a. pericardium b. endocardium c. epicardium d. myocardiumarrow_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_forwardWhat layer of the heart would be most immediately susceptible to infections caused by bacteria circulating in the blood? a. myocardium b. pericardium c. epicardium d. endocardiumarrow_forward
- What closes the atrioventricular valves? A. increased pressure in the ventricles B. increased pressure in the atriaarrow_forwardWhy might the increase in heart rate associated with a vigorous exercise program be the cause of his becoming unconscious? a. increase in blood pressure throughout the body b. failure of the conduction system c. increase in return volume of blood to the heart d. coronary blood flow reduction due to tachycardiaarrow_forwardHow 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_forward
- What is going on with the ventricles of the heart during the S-T interval? a. The ventricles are relaxed. b. The left ventricle is contracting, the right ventricle is relaxing. c. The ventricles are contracting. d. The right ventricle is contracting, the left ventricle is relaxing.arrow_forwardWhich lists the layers of the heart wall from superficial to deep? A. myocardium, endocardium, epicardium B. endocardium, myocardium, epicardium C. epicardium, myocardium, endocardiumarrow_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
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