Chapter 11 Introduction to the Heart Essentials of Human Anatomy & Physiology Seventh Edition Elaine N. Marieb Chapter 11 Introduction to the Heart Lecture Slides in PowerPoint by Jerry L. Cook Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

The Heart: In Thoracic Cavity Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.1

Blood Circulation Heart is a “double pump” for 2 circuits: Pulmonary – to and from lungs Systemic – to and from body tissues Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.3

Blood Circulation Right side of heart: deoxygenated blood Left side of heart: oxygenated blood Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.3

External Heart Anatomy 4 chambers: atria receive; ventricles pump Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy 4 chambers: atria receive; ventricles pump left atrium right atrium left ventricle right ventricle Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy Veins bring blood to the heart from body and lungs. Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy Veins bring blood to the heart from body and lungs. superior vena cava left pulmonary vein right pulmonary vein inferior vena cava Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy Arteries take blood away from the heart to body and lungs. Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy Arteries take blood away from the heart to body and lungs. aorta Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

ascending and descending branches External Heart Anatomy Arteries take blood away from the heart to body and lungs. ascending and descending branches aorta Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

External Heart Anatomy Arteries take blood away from the heart to body and lungs. aorta pulmonary trunk (artery) Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

branches into right and left pulmonary arteries External Heart Anatomy Arteries take blood away from the heart to body and lungs. branches into right and left pulmonary arteries pulmonary trunk (artery) Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

Internal Heart Anatomy Valves separate chambers and arteries Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

Internal Heart Anatomy Valves separate chambers and arteries bicuspid (mitral) valve tricuspid valve Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

Internal Heart Anatomy Valves separate chambers and arteries aortic semilunar valve pulmonary semilunar valve bicuspid (mitral) valve tricuspid valve Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Figure 11.2a

Video Clip of Cardiac Cycle

Video Clip of Heart Action NOVA: The Universe Within (Mike Powell- muscular and cardiovascular systems)