Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Chapter 12, Problem 2RQ
Summary Introduction
Introduction:
The contraction of the heart is based on the generation and propagation of the action potential. It can be defined as the
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Chapter 12 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 12 - 1. Which of the following is the rapid upstroke in...Ch. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - Which of the following slows the heart rate and AV...Ch. 12 - Prob. 6RQCh. 12 - Prob. 7RQCh. 12 - Which of the following means the ability to...Ch. 12 - An electrical difference across the fibers of the...Ch. 12 - Prob. 10RQ
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- PREDICT A patients mitral valve (left AV valve) does not close completely at the beginning of ventricular systole. What effect would this have on the cardiac cycle?arrow_forwardWhich heart chamber has the thickest wall? a. right atrium c. left atrium b. right ventricle d. left ventriclearrow_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_forward
- What happens when the pressure in the ventricles becomes lower than the pressure in the atria? a-the atrioventricular valves open b-the semilunar valves close c-the semilunar valves open d-the first heart sound occursarrow_forwardComplete ventricular filling occurs during what phase of the cardiac cycle? a. when the atria are in diastole b. when the ventricles are in diastole c. when the ventricles are in systolearrow_forwardThere is reduced blood flow to tissues and organs in cardiogenic shock. What is the main cause of this reduced blood flow? Question 4 options: a) A decrease in systemic vascular resistance b) A reduction in preload c) A reduction in cardiac output d) The loss of sympathetic tonearrow_forward
- Which statement is true? a. Veins have more muscle and elastic fibers than arteries b. Arteries have more muscle and elastic fibers than veins c. Veins carry blood away from the heart d. Arteries carry blood to the heartarrow_forwardWhen it comes to arteries and veins, do veins have? a) a tunica media that is missing in arteries b) thicker walls than arteries c) more smooth muscles than arteries d) valves, this is lacking in arteriesarrow_forwardSelect the correct one, Which of the following would not increase Cardiac Output? A. increase blood epinephrine concentration B. Increase Atrial Preload C. Increase Cardiac sarcoplasmic calcium concentration D. Increase Arterial Afterloadaarrow_forward
- When is the blood pressure in the left ventricle greater than the blood pressure in the aorta? A during diastole B during systole C all of the time D neverarrow_forwardWhich statement regarding the use of rocuronium is true? A) It has more rapid onset than vecuronium B) It has the same mechanism of action as succinylcholine C) It is the least cardiac stable neuromuscular blocking agent D) It has a significantly longer duration than vecuroniumarrow_forwardAn increase in blood PH will ? a. Increase hemoglobin saturation B. Decrease hemoglobin saturation C. Decrease heart rate D. Decrease respiratory ratearrow_forward
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