Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 23, Problem 4SQ
Summary Introduction
To analyze: The variation in the oxygen content of the blood in the babies due to the presence of a small hole in the wall between the left and right ventricles of the heart and its affect on the blood pumped into the systemic circuit.
Introduction:
The blood flow in the heart is regulated by the movement of the blood from the auricles to the ventricles. The deoxygenated blood moves into the lungs through the pulmonary artery for the exchange of the gases like carbon dioxide and oxygen. The presence of a hole in the wall of the ventricles causes the back flow of the blood in the heart chambers and the mixing of the oxygenated and deoxygenated blood.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Some babies, called “blue babies,” are born with a small hole in the wall between their heart’s left and right ventricles. Why do you suppose they are called “blue”? (Hint: How might this hole affect the oxygen content of theblood being pumped out into the body’s general circulation by the baby’s heart?)
What anatomical feature prevents the electrical signal from traveling directly from atrial muscle to ventricular muscle?
High pressure in the systemic and pulmonary circuit often results in ventricular hypertrophy in which the ventricle enlarges to pump against the greater force. Which side(s) of the heart would affected by high pressure in the pulmonary circuit? Which side(s) of the heart would be affected by high pressure in the systemic circuit? Could you explain this answer? Thank you
Chapter 23 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Knowledge Booster
Learn more about
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
- Does the human heart spend more time in diastole or more time in systole (assume a heart rate of 72 beats per minute)? Of what benefit is this?arrow_forwardValves between which structures of the heart shown in the figure control the direction of the movement of oxygenated blood within the heart and as it is pumped to the systemic circuit?arrow_forwardYou have a young woman on your ward who is awaiting heart surgery. She is keen to know about the structure and function of the heart and asks you to explain the flow of blood through the heart from start to finish. She wants to hear anatomical names and learn about physiological processes ejecting blood from her heart, your response will help keep her distracted from thinking about her upcoming operation. a. Describe the flow of blood through the heart, naming each of the vessels bringing and taking blood to and from the heart. Include chambers of the heart and name structures in the correct sequence along the blood's pathway through the heart - begin with blood returning to the heart from the body and end with blood being ejected into the systemic circulation. Include the names of the valves and identify which valves are open and closed during each cardiac cycle. Describe, using terms like diastole and systole, the changes in ventricular pressure during one cardiac cycle and…arrow_forward
- Some babies are born with a heart defect in which the ventricles are connected to the wrong arteries—that is, the right ventricle sends blood to the aorta, and the left ventricle sends blood to the pulmonary trunk. What is the problem with this arrangement?arrow_forwardWhich of the four chambers of the human heart has the thickest muscular walls?arrow_forwardWe analyzed the difference between the action potential of a cardiac contractile cell and an action potential in a neuron. Describe the physiological mechanisms behind the primary difference in the shape of these two action potentials. Why is this feature important to the normal workings of the heart?arrow_forward
- The sequence of contraction of the heart chambers is (a) random, (b) left chambers followed by right chambers, (c) both atria followed by both ventricles, (d) right atrium, right ventricle, left atrium, left ventricle.arrow_forwardFigure shows the conduction system of the heart that transmit the electrical impulses for the coordination of cardiac cycle. a) Referring to the Figure , which part of the heart's electrical conduction is known as the “pacemaker” of the heart? b)Explain how D controls atria and ventricles which causes ventricular systole.arrow_forwardWhich of the following statements are true? (a) The left ventricle wall is thicker than the right ventricle wall. (b) The left ventricle pumps blood at a higher pressure than the right ventricle. (c) The left ventricle pumps more blood with each beat than the right ventricle. Explain.arrow_forward
- John is your 68-year old neighbor who was recently told by his doctor that his heart’s main pacemaker stopped working (“They told me it is called an SA node”). He knows you are a nurse, so he came to you to ask why his heart is still beating, but only at a rate of 50 times per minute. Please explain using appropriate physiological and anatomical details.arrow_forwardWhich of these events occurs during (ventricular) systole? A)Only the left ventricle contracts. B)The ventricles fill with blood. C)Both ventricles contract. D)The atria fill with bloodarrow_forwardWhich part of the conducting system of the heart is localized in the interventricular septum? (a) the atrioventricular node, (b) the sinoatrial node, (c) the atrioventricular bundle, (d) the Purkinje fibers.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license