HUMAN ANATOMY
6th Edition
ISBN: 9781260210262
Author: SALADIN
Publisher: RENT MCG
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Chapter 20, Problem 20.5.4AYLO
Summary Introduction
To analyze:
The effects of aging on the heart.
Introduction:
When people age, the heart tends to enlarge slightly, and develop thicker walls and large chambers. The increase in the size is because of the increase in the size of muscle cells in the heart. The most notable effect on the heart due to aging is the stiffening of the arteries.
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DATA ANALYSIS
1. What electrical and mechanical events correlate to the P wave? The QRS complex? The T
wave?
2. During which ECG interval does filling of the ventricles occur? During which ECG interval
does ejection occur? What is systole and diastole?
3. Describe the path an action potential travels during one cardiac cycle.
4. Describe the flow of blood through the heart and the subsequent flow through the body.
5. What changes occurred in heart rate as position changes from lying down to sitting up?
Describe the physiological mechanisms causing these changes.
6. What percentage of the resting cardiac cycle is systole and what percentage is diastole? How
did this percentage change with exercise? Explain.
help me
15. Each heart chamber contracts separately, first the right atrium, then the right ventricle, left atrium, and left ventricle. True or False
Chapter 20 Solutions
HUMAN ANATOMY
Ch. 20.1 - Answer the following questions to test you...Ch. 20.2 - Parts of the fibrous skeleton sometimes become...Ch. 20.2 - Prob. 3BYGOCh. 20.2 - Prob. 4BYGOCh. 20.2 - Answer the following questions to test you...Ch. 20.3 - Answer the following questions to test you...Ch. 20.3 - Prob. 7BYGOCh. 20.3 - Prob. 8BYGOCh. 20.3 - Answer the following questions to test you...Ch. 20.4 - Why should mitochondria be large and more abundant...
Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Prob. 12BYGOCh. 20.4 - Prob. 13BYGOCh. 20.4 - Prob. 14BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20.5 - Answer the following questions to test you...Ch. 20.5 - Prob. 17BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20 - Prob. 20.1.1AYLOCh. 20 - Prob. 20.1.2AYLOCh. 20 - Prob. 20.1.3AYLOCh. 20 - To test your knowledge, discuss the following...Ch. 20 - To test your knowledge, discuss the following...Ch. 20 - Prob. 20.1.6AYLOCh. 20 - Prob. 20.2.1AYLOCh. 20 - Prob. 20.2.2AYLOCh. 20 - Prob. 20.2.3AYLOCh. 20 - Reasons for the differences in muscularity between...Ch. 20 - Prob. 20.2.5AYLOCh. 20 - Prob. 20.2.6AYLOCh. 20 - The names, locations, and anatomy of the two...Ch. 20 - Prob. 20.2.8AYLOCh. 20 - Prob. 20.2.9AYLOCh. 20 - Prob. 20.2.10AYLOCh. 20 - Prob. 20.3.1AYLOCh. 20 - Prob. 20.3.2AYLOCh. 20 - Prob. 20.3.3AYLOCh. 20 - Prob. 20.3.4AYLOCh. 20 - Prob. 20.4.1AYLOCh. 20 - Prob. 20.4.2AYLOCh. 20 - Prob. 20.4.3AYLOCh. 20 - The Coronary Conduction System and Cardiac...Ch. 20 - Prob. 20.4.5AYLOCh. 20 - Prob. 20.5.1AYLOCh. 20 - Prob. 20.5.2AYLOCh. 20 - Prob. 20.5.3AYLOCh. 20 - Prob. 20.5.4AYLOCh. 20 - Prob. 20.5.5AYLOCh. 20 - Prob. 1TYRCh. 20 - To get from the right atrium to the right...Ch. 20 - There is/are_________ pulmonary vein(s) emptying...Ch. 20 - Prob. 4TYRCh. 20 - Prob. 5TYRCh. 20 - These are some of the points that the blood passes...Ch. 20 - The ascending aorta and pulmonary trunk develop...Ch. 20 - Prob. 8TYRCh. 20 - Blood in the anterior interventricular branch of...Ch. 20 - Which of these is not characteristic of the heart...Ch. 20 - Prob. 11TYRCh. 20 - The circulatory route from aorta to the venae...Ch. 20 - The circumflex branch of the left coronary artery...Ch. 20 - The finest passages through which electical...Ch. 20 - Electrical signal pass quickly from one...Ch. 20 - The abnormal bulging of the left AV valve into the...Ch. 20 - Prob. 17TYRCh. 20 - Prob. 18TYRCh. 20 - Prob. 19TYRCh. 20 - Prob. 20TYRCh. 20 - Prob. 1BYMVCh. 20 - Prob. 2BYMVCh. 20 - Prob. 3BYMVCh. 20 - Prob. 4BYMVCh. 20 - Prob. 5BYMVCh. 20 - Prob. 6BYMVCh. 20 - Prob. 7BYMVCh. 20 - Prob. 8BYMVCh. 20 - Prob. 9BYMVCh. 20 - Prob. 10BYMVCh. 20 - Prob. 1WWWTSCh. 20 - Prob. 2WWWTSCh. 20 - Prob. 3WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 6WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 8WWWTSCh. 20 - Prob. 9WWWTSCh. 20 - Prob. 10WWWTSCh. 20 - Prob. 1TYCCh. 20 - Becky, age 2, was born with a hole in her...Ch. 20 - Prob. 3TYCCh. 20 - Prob. 4TYCCh. 20 - Prob. 5TYC
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- sluis 1. Arteries that supply blood to cardiac muscle 2. Layer of heart wall containing cardiac muscle 3. Extensions of the atria alsoq ard 4. Heart is located here (area between the lungs)arrow_forwardData Analysis and Conclusions 1. Why are the walls of the left ventricle thicker than the walls of the right ventricle? 2. Pulmonary circulation carries blood between the heart and the lungs. Systemic circulation carries blood to the rest of the body. In what chambers of the heart does pulmonary circulation begin and end? In what chambers does systemic circulation begin and end?arrow_forwardII. Induction similar or relatea, the fourth does not belong with the other three. Choose the one term that does NOT belong in each of the following groupings In each question, three of the anatomical and physiological terms are A D Pulmonary trunk Right side of the Left side of the heart Vena cava 16 heart Electrical 17 T wave Pwave activity of the ventricles QRS wave AV valves Semilunar valves open AV valves Ventricular 18 closed opened systole 19 Tricuspid valve Mitral valve Bicuspid valve Left AV valve Pulmonary Superior Vena Cava 20 Umbilical Artery Pulmonary vein arteryarrow_forward
- The heart's internal pacemaker beats by: an internal implant that sends an electrical impulse through the heart the excitation of cardiac muscle cells at the sinoatrial node followed by the atrioventricular node the excitation of cardiac muscle cells at the atrioventricular node followed by the sinoatrial node the action of the sinusarrow_forwardOf the three germ layers that give rise to all adult tissues and organs, which gives rise to the heart? ectoderm endoderm mesoderm placentaarrow_forwardThe pulmonary trunk and aorta are derived from which primitive heart structure? bulbus cordis primitive ventricle sinus venosus truncus arteriosusarrow_forward
- The first heart sound represents which portion of the cardiac cycle? atrial systole ventricular systole closing of the atrioventricular valves closing of the semilunar valvesarrow_forwardThe cardiac cycle consists of a distinct relaxation and contraction phase. Which term is typically used to refer ventricular contraction while no blood is being ejected? systole diastole quiescent isovolumic contractionarrow_forwardThe force the heart must overcome to pump blood is known as ________. preload after load cardiac output stroke volumearrow_forward
- Which primitive area of the heart will give rise to the right ventricle? bulbus cordis primitive ventricle sinus venosus truncus arteriosusarrow_forwardContraction of __________ drives the flow of blood through the aorta and pulmonary arteries. a. atria b. ventriclesarrow_forwardIn which septum is it normal to find openings in the adult? interatrial septum interventricular septum atrioventricular septum all of the abovearrow_forward
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