Answered: If the left side of the heart were…

If the left side of the heart were failing, how would this change the pressure that the right side of the heart needed to generate to continue moving blood into the pulm

Fundamentals of Sectional Anatomy: An Imaging Approach

2nd Edition

ISBN:9781133960867

Author:Denise L. Lazo

Publisher:Denise L. Lazo

Chapter5: Thorax

Section: Chapter Questions

Problem 4RQ

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Anatomical Position

Anatomical position refers to the position in which an individual faces forward with their upper limbs stretched to both sides with palms facing forward. The standard anatomical position of the body is used to reference other anatomical aspects of the body.

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6. If the left side of the heart were failing, how would this change the pressure that the right side of the heart needed to generate to continue moving blood into the pulmonary circuit?

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A characteristic of blood circulation through or to the heart is that: a. the superior vena cava conveys blood to the head. b. the inferior vena cava conveys blood to the right atrium. c. the pulmonary arteries convey blood from the lungs to theleft atrium. d. the pulmonary veins convey blood into the left ventricle. e. the aorta branches into two coronary arteries that conveyblood from heart muscle.
The ________ layer secretes chemicals that help to regulate ionic environments and strength of contraction and serve as powerful vasoconstrictors. pericardial sac endocardium myocardium epicardium
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 ventricle
Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? tricuspid, pulmonary semilunar, bicuspid, aortic semilunar mitral, pulmonary semilunar, bicuspid, aortic semilunar aortic semilunar, pulmonary semilunar, tricuspid, bicuspid bicuspid, aortic semilunar, tricuspid, pulmonary semilunar
18. Under the microscope, I can see a section through one of the chambers of the heart. The myocardium is thick and the endocardium is very thin. In addition, I can see a valve that connects this chamber to the next which has two cusps that prevent backflow from one chamber into another. Where in the heart am 1? What does the thickness of the myocardium tell you about this region of the heart? What is the valve called? What does it do? What other valve would you see in this area of the heart? Where is it situated?
7. If your instructor asked you to explain why the myocardium is thicker in the left ventricle than it is in the right ventricle, which of the following would you most likely say? a. The right ventricle has to pump harder to overcome the high resistance required to pump blood into the long pulmonary circuit, whereas the left ventricle does not need to generate as much pressure since the systemic circuit is shorter and provides less resistance. b. The right ventricle has to pump harder to overcome the high resistance required to pump blood into the long systemic circuit, whereas the left ventricle does not need to generate as much pressure since the pulmonary circuit is shorter and provides less resistance. c. The left ventricle has to pump harder to overcome the high resistance required to pump blood into the long systemic circuit, whereas the right ventricle does not need to generate as much pressure since the pulmonary circuit is shorter and provides less resistance. d. The left…
7. High pressure in the systemic and pulmonary circuits often results in ventricular hypertrophy, in which the ventricle enlarges to pump against greater force. If an individual had pulmonary ventricular hypertrophy, which part of the heart would be affected?
3. Suppose it were the pulmonary semilunar valve that were stenotic. Which of the four chambers of the heart would have its workload increased the most and why?
1. Which chamber of the heart receives oxygen-rich blood directly from the pulmonary veins?
2. Fill-in-the-blanks: Blood flow into the_________ (pulmonary circuit/systemic circuit) would __________(increaseldecrease) if the left side of the heart fails. Blood flow into the ________(pulmonary circuit/systemic circuit) would _________(increaseldecrease) if the right side of the heart fails.
1. In the flow chart provided below, label the structures that lie along the path of blood flow in the heart OR make a similar diagram of your own showing the path of blood in a linear fashion. The top row of boxes (blue) refer to the right side of the heart (unoxygenated blood) and the bottom row of boxes (red) refer to structures in the left side of the heart (oxygenated blood.) (b) 2. Label all the structures indicated by the lines in the diagram below.
6. Describe the mechanical events of the cardiac cycle (as in Figure 14.18a), including isovolumic ventricular contraction and isovolumic ventricular relaxation (pressure- volume curve of left ventricle, Figure 14.18b). What causes valves to open and close during a cardiac cycle?