Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 34.1, Problem 3CC
Summary Introduction
To determine:
The effect of hole in heart as if the heart of a normally developed human fetus has a hole between left and right atria and in some cases the whole does not completely before birth. If it is not surgically corrected, how would it affect the O2 content of the blood entering into the systemic circuit.
Introduction:
Heart is a muscular organ present in the left side of the breastbone. It pumps blood through the network of arteries and veins know as cardiovascular system. Human has four chambered heart in which two atria and two ventricles are present and are separated by a valve. Blood flow in human body is facilitated by double circulation.
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Chapter 34 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 34.1 - How is the now of hemolymph through an open...Ch. 34.1 - Three-chambered hearts with incomplete septa were...Ch. 34.1 - Prob. 3CCCh. 34.2 - Prob. 1CCCh. 34.2 - Why is it important that the AV node delay the...Ch. 34.2 - Prob. 3CCCh. 34.3 - What is the primary cause of the low velocity of...Ch. 34.3 - Prob. 2CCCh. 34.3 - Prob. 3CCCh. 34.4 - Prob. 1CC
Ch. 34.4 - Prob. 2CCCh. 34.4 - Prob. 3CCCh. 34.4 - Prob. 4CCCh. 34.5 - Why is an internal location for gas exchange...Ch. 34.5 - After a heavy rain, earthworms come to the...Ch. 34.5 - MAKE CONNECTIONS Describe similarities in the...Ch. 34.6 - Prob. 1CCCh. 34.6 - Prob. 2CCCh. 34.6 - WHAT IF? If an injury tore a small hole in the...Ch. 34.7 - What determines whether O2, or CO2, undergoes net...Ch. 34.7 - How does the Bohr shift help deliver O2, to very...Ch. 34.7 - Prob. 3CCCh. 34 - Which of the following respiratory systems is not...Ch. 34 - Blood returning to the mammalian heart in a...Ch. 34 - Pulse is a direct measure of A. blood pressure. B....Ch. 34 - Prob. 4TYUCh. 34 - One feature that amphibians and humans have in...Ch. 34 - If a molecule of CO2 released into the blood in...Ch. 34 - Prob. 7TYUCh. 34 - DRAW IT Plot blood pressure against time for one...Ch. 34 - Prob. 9TYUCh. 34 - Prob. 10TYUCh. 34 - Prob. 11TYUCh. 34 - SYNTHESIZE YOUR KNOWLEDGE The diving bell spider...
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- Q4.4. Describe using diagrams as appropriate the cardiac conduction system within the heart. Sketch and outline the major features of an ECG in a healthy individual.arrow_forwardKeeping the mammalian cardiac cycle balanced is/are: a. an AV node between the right atria atrium and right ventricle, which induces a wave of contraction. b. pacemaker cells, which compose the AV node and signal theSA node. c. an insulating layer that isolates the SA node from the rightatrium. d. ion channels in pacemaker cells, which close to depolarizetheir plasma membranes. e. neurogenic stimuli from the nervous system.arrow_forwardScenario 2-One very unhealthy-looking human goes into atrial fibrillation while working out in the Vegan gym. This is when the SA node is not generating coordinated electrical impulses. Instead, impulses are flowing randomly over the atrial walls eventually making their way to the AV node. The AV node then generates normal electrical impulses. The result of this appears to be normal ventricular contraction, but the atria just wiggle around, and atrial contraction is not well coordinated. Predicted effect on systolic and dastolic blood Predicted effect on the EKG trace. Present both a drawing of the trace and explain how/why it is different from the normal trace. pressure:arrow_forward
- Q4.3. Under normal physiological conditions, the pressure-volume relationship for the heart is described in Figure 4.3. Explaining your reasoning, approximate the work associated with the left ventricle under these conditions. 150 125 Phase 3 100 - 75 50 - Phase 4 Work Phase 2 25 Phase 1 25 50 75 100 125 150 Left ventricular volume (mL)arrow_forwardWHAT IF? Suppose that after you exercise regularly forseveral months, your resting heart rate decreases, butyour cardiac output at rest is unchanged. Based on theseobservations, what other change in the function of yourheart at rest likely occurred?arrow_forward#8arrow_forward
- Canvas ← X Ⓡ Question 22 The corresponding mechanical events of P wave and the QRS complex are oo O Depolarization of the ventricles; repolarization of the atria O O O Depolarization of the ventricles; polarization of the SA Node contraction of the atria; contraction of the ventricle Contraction of the AV node; relaxation of the SA node Repolarization of the ventricles; polarization of the atria and ventricles and respectively?arrow_forwardTest Your Understanding 13. SCIENCE, TECHNOLOGY, AND SOCIETY Explain the association between atherosclerosis and ischemic heart disease. Imagine that you were the Surgeon General of the United States. What types of programs would you advocate to decrease heart disease? Do you think that as a society we should invest resources into the development of stem cell therapies for more effective treatment of myocardial infarction?arrow_forward54. Trace blood flow through the chambers and vessels of the pigeons heart. Use red for oxygenated blood and blue for deoxygenated blood. A pigeons heart is depicted below.;?arrow_forward
- 5.According to Steven et al., (2006), hypoplastic left heart syndrome is a medical terminology used to describe a spectrum of congenital heart malfomation exhbiting an array of underdeveloped structures in the left side of the heart. How does this affect the anatomical and physiological function of the left side of the heart? Read and analyze the question and choices CAREFULLY; more importantly, ALWAYS CHOOSE the BEST answer. The heart will have a difficulty in pumping oxygenated blood to all parts of the body The heart is bound to enlarge by loosening its myocardium after a few years. The heart will not be able to absorb oxygen from the lungs. The heart will exert too much pressure to deliver oxygen-poor blood to the lungs.arrow_forward15arrow_forward19. The diagram below is a schematic representation of the circulatory system. In other words, it is not meant to be a realistic drawing of body parts, but only to show the basic scheme of the system – the relationships among its parts and the sequence of events that occur in the system. The circulation of blood is vital to the process of respiration, since the blood carries fresh oxygen to the cells of the body and returns carbon dioxide to the lungs to be expelled. As you have learned, arteries are the blood vessels that carry blood away from the heart. Which blood vessels in the diagram are arteries? The arrows indicate the blood vessels 2 and 3 carry blood away from the heart, so they are arteries. Blood vessels 1 and 4, which return blood to the heart, are veins. Study the diagram below and then answer the questions that follow. Heart Body cells Lungs Key: Oxygen-rich blood Carbon dioxide-rich blood A. Refer to the diagram. Blood that is rich in oxygen is found in which two of the…arrow_forward
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