WCJC Biology 2402 Rev 082110 PAGE 1 Biology 2402 The Cardiovascular System - Heart Purpose: This lab will identify the structures of the human heart and the histology of cardiac muscle. I. Orientation A. Discuss lab syllabus and schedule B. Discuss expectations and testing procedures II. Microscopic Anatomy of Cardiac Muscle A. Identify cardiac muscle tissue (model and slide) B. Identify structures found in cardiac muscle tissue (model and slide) III. Gross Anatomy of the Human Heart A. Identify the layers of the heart wall (models) B. Identify the structures of the human heart (models) C. Identify the major arteries of the heart (models) D. Identify the structures of the cardiac conduction system In addition to the general goals above, specific anatomical structures that the student must be able to identify are listed below. A few select structures may be added to the list at the discretion of the instructor.The Cardiovascular System: Heart Description PageCARDIAC MUSCLE HISTOLOGY (slide and/or model)22intercalated discsstriationsbranched cardiac cellsnucleusHEART ANATOMYmediastinum --base 102apex 99Layers of the Heart Wall: 99epicardium (visceral pericardium) myocardiumendocardiumChambers and Associated Structures:99-103right atriumright ventricleleft atriumleft ventricletrabeculae carneaeinterventricular septuminteratrial septumHeart Valves and Associated Structures:99A. atrioventricular (AV) valves 1. tricuspid valve 2. biscuspid/mitral valveB. semilunar valves 1. pulmonary valve 2. aortic valveAV valve structures:chordae tendineaepapillary musclesWCJC Biology 2402 Rev 082510 PAGE 2The Cardiovascular System: Heart Description PageBlood Vessels Entering the Right Atrium:99-103superior vena cavainferior vena cavacoronary sinusBlood Vessels Exiting the Right Ventricle to Enter the Lungs:99-102pulmonary trunk -right pulmonary artery -left pulmonary arteryBlood Vessels Entering the Left Atrium From the Lungs:99-102right and left pumonary veins (4)Blood Vessels Exiting the Left Ventricle:99-102asending aorta -origin of right coronary artery -origin of left coronary arteryaortic archFetal Remnants: 99, 102ligamentum arteriosumfossa ovalisCoronary Circulation: 99-101A. right coronary artery (RCA) 1. marginal artery 2. posterior interventricular arteryB. left coronary artery (LCA) 1. anterior interventricular artery 2. circumflex artery Intrinsic Cardiac Conduction System: 103sinoatrial (SA) nodeatrioventricular (AV) nodeatrioventricular bundle (bundle of His)right bundle branchleft bundle branchPurkinje fibersWCJC Biology 2402 Rev 082510 PAGE