Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Chapter 19, Problem 1CRCAQ
Classify the three congenital heart defects-ventricular septal defect, coarctation of the aorta, and tetralogy of Fallot (see Figure 19.18) according to whether they produce (1) mixing of oxygenated and unoxygenated blood, (2) increased workload for the ventricles, or (3) both of these problems.
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Classify the three congenital heart defects—ventricular septal defect, coarctation of the aorta, and tetralogy of Fallot (Figure 19.18)— according to whether they produce (1) mixing of oxygenated and unoxygenated blood, (2) increased workload for the ventricles, or (3) both of these problems.
Right to left shunting is a consequence of congenital abnormalities of the Heart. The major symptom associated with this is cyanosis. What are the four main abnormalities that lead to this condition and what is the terminology that is used for these abnormalities?
Define each of the following external features of the heart: auricle, coronary sulcus, anterior interventricular sulcus, and posterior interventricular sulcus.
Chapter 19 Solutions
Human Anatomy
Ch. 19 - Prob. 1CYUCh. 19 - Prob. 2CYUCh. 19 - What is another name for the epicardium?Ch. 19 - Identify the heart chamber or chambers that...Ch. 19 - Prob. 5CYUCh. 19 - Prob. 6CYUCh. 19 - During ventricular systole, are the AV valves open...Ch. 19 - Differentiate a stenotic valve from an incompetent...Ch. 19 - What is the significance of the gap junctions in...Ch. 19 - What is the pacemaker of the heart, and where is...
Ch. 19 - Prob. 11CYUCh. 19 - Prob. 12CYUCh. 19 - Prob. 13CYUCh. 19 - How would incomplete formation of the...Ch. 19 - Which chamber of the heart is formed from the...Ch. 19 - What is the single most important factor for...Ch. 19 - The most external part of the pericardium is the...Ch. 19 - Prob. 2RQCh. 19 - How many cusps does the right atrioventricular...Ch. 19 - Prob. 4RQCh. 19 - Prob. 5RQCh. 19 - Prob. 6RQCh. 19 - Prob. 7RQCh. 19 - Prob. 8RQCh. 19 - Prob. 9RQCh. 19 - Which layer of the heart wall is the thickest? (a)...Ch. 19 - The inferior left corner of the heart is located...Ch. 19 - Ben was annoyed when his lab partner insisted that...Ch. 19 - Describe the location of the heart within the...Ch. 19 - Trace a drop of blood through all the heart...Ch. 19 - Prob. 15RQCh. 19 - Sketch the heart and draw all the coronary vessels...Ch. 19 - Prob. 17RQCh. 19 - Prob. 18RQCh. 19 - Make a drawing of the adult heart and the...Ch. 19 - How do the right and left ventricles differ...Ch. 19 - Which is more resistant to fatigue, cardiac muscle...Ch. 19 - Describe the structure and function of an...Ch. 19 - Compare and contrast the structure of cardiac...Ch. 19 - Classify the three congenital heart...Ch. 19 - Prob. 2CRCAQCh. 19 - Prob. 3CRCAQCh. 19 - After a man was stabbed in the chest, his face...Ch. 19 - A heroin addict felt tired, weak, and feverish....Ch. 19 - Another patient had an abnormal heart sound that...Ch. 19 - Prob. 7CRCAQCh. 19 - During a lethal heart attack, a blood. clot lodges...Ch. 19 - Prob. 9CRCAQ
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- Although not considered the primary pacemaker of the heart, the atrioventricular node can indeed be considered as playing SOME role in setting the rhythm of the heart (kind of a secondary pacemaker). Explain how/why.arrow_forwardSelect the best answer or answers from the choices given: In the heart, which of the following apply? (1) Action potentials are conducted from cell to cell across the myocardium via gap junctions, (2) the SA node sets the pace for the heart as a whole, (3) spontaneous depolarization of cardiac cells can occur in the absence of nerve stimulation, (4) cardiac muscle can continue tocontract for long periods in the absence of oxygen. (a) all of the above, (b) 1, 3, 4, (c) 1, 2, 3, (d) 2, 3.arrow_forwardIndicate which of the following sentences is true in heart failure caused by stenosis of the mitral valve. Group of answer choices 1)Anytime a valve is stenotic, the L atrium must generate a greater force than normal to attempt to move blood through the narrowed opening. This decreases the workload on the heart, eventually leading to an inoperative muscle. 2)Anytime a valve is stenotic, the L atrium must generate a greater force than normal to attempt to move blood through the narrowed opening into the L ventricle. This increases the workload on the heart, eventually leading to its weakening and failing. 3)Anytime a valve is stenotic, the R atrium cannot generate greater force than normal to attempt to move blood through the narrowed opening, and it fails. 4)Anytime there is valve regurgitation, the heart must generate a greater force than normal to attempt to move blood through the narrowed opening into the ventricle. This increases the workload on the heart,…arrow_forward
- Define and briefly describe the following disorders associated with the heart: Silent myocardial ischemia- vascular stenosis- angina pectoris- myocardial infarction -arrow_forwardIdentify the structures in the following diagram of a sectional view of the heart.arrow_forwardExplain any four problems that occur in the heart cycle because of abnormalities in the amplitudes and time duration of the waves in an ECG with neat sketches.arrow_forward
- Describe the general overall shape of the left and right cavities of the ventricles as observed in a transverse section of the heart.arrow_forwardSelect the FALSE statement: /////////////////www. OA) This abnormal ECG results in increased stroke volume O B) In this abnormal ECG, the ventricles are not stimulated to contract by the SA node, the natural pacemaker. of the heart O C) This abnormal ECG is compatible with life so far as the individual does not engage in strenuous activities OD) This abnormal ECG results in decreased in CO OE) None of the abovearrow_forwardThe left AV valve has only two large leaflets, while the right AV valve has three smaller leaflets. It is a general principle of physiology that structure is a determinant of—and has coevolved with—function. Although it is unknown why the two valves differ in structure in this way, what difference in the functional demands of the left side of the heart might explain why there is one less valve leaflet than on the right side?arrow_forward
- Indicate the corect statement: A. the arteries of the heart are called coronary because they supply the apex like a "crown" B. the right and left coronary arteries arise from the semilunar valves at the level of the aortic conus C. the right coronary artery gives off an AV nodal artery which enters the posterior part of the atrioventricular sulcus D. the interventricular septum is supplied by septal arteries or perforating branches of the atrial arteries E. atripventricular and ventriculo-atrial arteries are branches of the coronary arteries that supply the pericardium and its expansion to the great vesselsarrow_forwardProvide the alternative terms for the contraction and relaxation of heart chambers.arrow_forwardExplain why it is sufficient to replace the ventricles, but not the atria,in artificial heart transplantation.arrow_forward
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