Fundamentals of Anatomy & Physiology Plus Mastering A&P with Pearson eText -- Access Card Package (11th Edition) (New A&P Titles by Ric Martini and Judi Nath)
11th Edition
ISBN: 9780134394954
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 2RQ
The autonomic centers for cardiac function are located in (a) the myocardial tissue of the heart, (b) the cardiac centers of the medulla oblongata, (c) the cerebral cortex, (d) all of these structures.
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The autonomic centers for cardiac function are located in, (a) myocardial tissue of the heart. (b) cardiac center of the medulla oblongata. (c) the cerebral cortex. (d) a, b, and c are correct.
Which 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.
(a) What is the cardiac cycle? (b) What phases and events are necessary to complete the cardiac cycle?
Chapter 20 Solutions
Fundamentals of Anatomy & Physiology Plus Mastering A&P with Pearson eText -- Access Card Package (11th Edition) (New A&P Titles by Ric Martini and Judi Nath)
Ch. 20 - Prob. 1CPCh. 20 - Prob. 2CPCh. 20 - Why is the left ventricle more muscular than the...Ch. 20 - Define autorhythmicity.Ch. 20 - Which structure of the heart is known as the...Ch. 20 - Prob. 6CPCh. 20 - Why is it important for impulses from the atria to...Ch. 20 - Give the technical terms for heart contraction and...Ch. 20 - List the phases of the cardiac cycle.Ch. 20 - Is the heart always pumping blood when pressure in...
Ch. 20 - What could cause an increase in the size of the...Ch. 20 - Define cardiac output.Ch. 20 - Prob. 13CPCh. 20 - Prob. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 16CPCh. 20 - Prob. 17CPCh. 20 - The great cardiac vein drains blood from the heart...Ch. 20 - The autonomic centers for cardiac function are...Ch. 20 - Prob. 3RQCh. 20 - The simple squamous epithelium covering the heart...Ch. 20 - The heart is surrounded by the (a) pleural cavity,...Ch. 20 - The cardiac skeleton of the heart has which two of...Ch. 20 - Cardiac output is equal to the (a) difference...Ch. 20 - Identify the superficial structures in the...Ch. 20 - Identify the structures in the following diagram...Ch. 20 - During diastole, a chamber of the heart (a)...Ch. 20 - During the cardiac cycle, the amount of blood...Ch. 20 - What role do the chordae tendineae and papillary...Ch. 20 - Describe the three distinct layers that make up...Ch. 20 - What are the valves in the heart, and what is the...Ch. 20 - Trace the normal pathway of an electrical impulse...Ch. 20 - What is the cardiac cycle? What phases and events...Ch. 20 - What three factors regulate stroke volume to...Ch. 20 - The cells of the conducting system differ from the...Ch. 20 - Which of the following is longer? (a) the...Ch. 20 - If the papillary muscles fail to contract, (a) the...Ch. 20 - Cardiac output cannot increase indefinitely...Ch. 20 - Describe the function of the SA node in the...Ch. 20 - What are the sources and significance of the four...Ch. 20 - Differentiate between stroke volume and cardiac...Ch. 20 - What factors influence cardiac output?Ch. 20 - What effect does sympathetic stimulation have on...Ch. 20 - Describe the effects of epinephrine,...Ch. 20 - Vern is suffering from cardiac arrhythmias and is...Ch. 20 - Harvey has a heart murmur in his left ventricle...Ch. 20 - The following measurements were made on two...Ch. 20 - Prob. 31RQCh. 20 - Prob. 1CCCh. 20 - Prob. 2CC
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- The two factors that assist the relatively low venous pressures in propelling blood toward the heart are (a) ventricular systole and valve closure. (b) gravity and vasomotion. (c) muscular compression and the respiratory pump. (d) atrial and ventricular contractions.arrow_forwardThe amount of blood forced out of the heart depends on the, (a) degree of stretching at the end of ventricular diastole. (b) contractility of the ventricle.(c) amount of pressure required to eject blood. (d) a, b, and c are correct.arrow_forward3. (1) (2) 3.arrow_forward
- Which of the following are the cardinal signs of cardiac arrest? (A) Apnea, carotid pulses and dilated pulses (B) Pinpoint pulses, absent pulse, flushed skin (C) Cool pale skin and absence of radial pulse (D) Cyanosis, slow pulse and dilated pulsesarrow_forwardBlood flow through the capillaries is steady despite the rhythmic pumping action of the heart because of the (a) elasticity of the large arteries only, (b) elasticity of all the arteries, (c) ligamentum arteriosum, (d) venous valves.arrow_forwardList the major blood vessels and their origins involved in coronary circulation. (ii) At what stage or phase of the heart’s activities does the heart tissues becomes perfused with oxygenated blood? (iii) Define myocardial infarction. (iv) Explain the typical signs associated with acute myocardial infarction. (v) Outline/State which arteries of the heart are most commonly affected/occluded. (vi) Explain why occlusions lead to infarct in the heart. (vii) What is creatine phosphokinase (CPK) and why are elevated CPK levels in the blood suggestive of a myocardial infarction? (viii) What is cor pulmonale? (ix) Describe the main clinical findings (with cor pulmonale) on examination. Explain your answer.arrow_forward
- Which 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(i)List the major blood vessels and their origins involved in coronary circulation.(ii) At what stage or phase of the heart’s activities does the heart tissues becomes perfused with oxygenated blood? (iii) Define myocardial infarction.(iv) Explain the typical signs associated with acute myocardial infarction. (v) Outline/State which arteries of the heart are most commonly affected/occluded.(vi) Explain why occlusions lead to infarct in the heart.arrow_forwardThe middle cardiac vein runs with which artery? (a) marginal artery, (b) aorta, (c) coronary sinus, (d) anterior interventricular artery, (e) posterior interventricular artery.arrow_forward
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