EBK HUMAN ANATOMY
8th Edition
ISBN: 9780100799554
Author: Martini
Publisher: YUZU
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Chapter 21, Problem 1RC
Summary Introduction
Introduction:
Human heart refers to one of the vital organs which comprises four chambers having two each, ventricles and atrium. The heart receives the blood which lacks in oxygen and sends the blood to the lungs in order to get oxygenated and then the heart sends out blood rich in oxygen to other parts of the body.
Correct answer:
The sinus node dysfunction reduces the heartbeat.
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Chapter 21 Solutions
EBK HUMAN ANATOMY
Ch. 21 - Prob. 1RFTCh. 21 - Prob. 2RFTCh. 21 - Prob. 3RFTCh. 21 - Prob. 4RFTCh. 21 - Prob. 5RFTCh. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 7RFTCh. 21 - Prob. 8RFTCh. 21 - Prob. 9RFTCh. 21 - Match each numbered item with the most closely...
Ch. 21 - Prob. 11RFTCh. 21 - Prob. 12RFTCh. 21 - Which of the following is not true of intercalated...Ch. 21 - Prob. 14RFTCh. 21 - The pacemaker cells of the heart are located in...Ch. 21 - Prob. 16RFTCh. 21 - Prob. 1RCCh. 21 - If the papillary muscles fail to contract, (a)...Ch. 21 - Prob. 3RCCh. 21 - Prob. 4RCCh. 21 - Prob. 5RCCh. 21 - Define a pacemaker cell, and list the group of...Ch. 21 - Prob. 7RCCh. 21 - Prob. 8RCCh. 21 - Why are nodal cells unique? What is their...Ch. 21 - What is the effect of NE release on cardiac...Ch. 21 - Prob. 1CTCh. 21 - 2. Lee is brought to the emergency room suffering...Ch. 21 - Prob. 3CT
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- 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_forwardWhich 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_forwardWhat condition(s) does increasing the diameter of the left flow tube simulate in the human heart (A) increasing afterload (B) increasing preload (C) increasing viscosity of the blood (D) increasing the contractility of the ventriclesarrow_forward
- (a) Name the type of blood vessel labelled (i) C. (ii) D. (b) In which direction does blood in vessel A travel? (c) Which of the four blood vessels contains the most oxygen? (d) What happens to the amount of oxygen in the blood as it passes through the body organs? (e) What is the chamber of the heart labelled X? ·arrow_forwardDuring the cardiac cycle, when would you expect to hear the second heart sound? a) After ejection of blood into the aorta O b) Between the P wave and the QRS complex O C) When the AV valves close O d) When the AV valves are openarrow_forward1) unoxygenated blood leaves the right ventricle via the .................. to get to the lungs?arrow_forward
- Idenitfy the incorrect statement about the heart (A) if a coronary artery is blocked, it can lead to a myocardial infarction (B) coronary circulation is between the heart an lungs (C) some symptoms of a heart attack can include chest pain, nausea, and light headedness (D) the chorade teninae and papillary mkuscles prevent eversion upon ventricular contractionarrow_forwardIdentify the correct order of the blood flow pathway? (A) the pulmonary arteries carry oxygenated blood away from the pulmonary trunk (B) the left ventricle pushes blood through the aortic valve (C) the tricuspid valve takes blood from the left atrium to the left ventricle (D)superior vena cava, opening of coronary sinus, and inferior vena cava take blood to the left atriumarrow_forward(a) Name the elements of the intrinsic conduction system of the heart in order, beginning with the pacemaker. (b) What is the important function of this conduction system?arrow_forward
- Complete the following statements: The membrane on the surface of the heart is called the ......................arrow_forwardA 'pulse deficit' (A) is determined by subtracting the value of the apical pulse from the radial pulse (B) is determined by subtracting the radial pulse from the apical pulse (C) may be caused by atrial fibrillation (D) may be caused by multiple premature ventricular contractions (E) A and C (F) B, C, and Darrow_forwardBased on what we learned in this lecture, what is likely to happen to the heart rate in Patient SM (with bilateral amygdala destruction) when she travels in a dangerous environment? a.) increase b.) decrease c.) unchangedarrow_forward
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