Chapter 20 powerpoint notes - Chapter 20 Cardiovascular...

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Chapter 20 Cardiovascular System I. Introduction A. The purpose of the chapter is to: 1. Learn about the components of the cardiovascular system 2. Focus on the anatomy and physiology of the heart 3. Learn about the cardiac cycle 4. Discuss the various factors that influence heart rate and force of contraction II. Location of the Heart A. The heart is located in the mediastinum B. The heart is located in the mediastinum III. Pericardium A. The heart is enclosed and held in place by the pericardium
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B. The pericardium consists of an outer fibrous pericardium and an inner serous pericardium C. The serous pericardium has 2 layers: 1. Visceral 2. Parietal D. The visceral and parietal layers are separated by the serous cavity, a fluid-filled space IV. Layers of the Heart Wall A. The wall of the heart has 3 layers: 1. Epicardium 2. Myocardium 3. Endocardium V. Chambers of the Heart A. The chambers of the heart include two upper atria and two lower ventricles B. The right atrium receives blood from the superior and inferior vena cava and the coronary sinus C. The right ventricle receives blood from the right atrium and sends blood to the lungs D. The left atrium receives blood from the pulmonary veins E. The left ventricle receives blood from the left atrium and sends blood all over the body 2
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VI.
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