Dissection of pericardium and heart in situ

Interior of left atrium and left ventricle.

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Image #118-5

Dissection of pericardium and heart in situ Interior of left atrium and left ventricle. The latex cast has been cut away to display the cavity of the left atrium and the posterior cusp of the mitral valve with its associated chordae tendineae. 1 . Superior vena cava 2 . Ascending aorta 3 . Transverse pericardial sinus (indicated on drawing by double pointed arrow) 4 . Wall of left atrium (cut) 5 . Fossa ovalis 6 . Latex cast in coronary sinus 7 . Valve of inferior vena cava 8 . Right ventricle 9 . Pulmonary trunk 10 . Red latex cast in left auricle 11 . Latex cast protruding from left pulmonary veins 12 . Left atrium 13 . Pericardium 14 . Posterior cusp of mitral valve 15 . Chordae tendineae 16 . Anterior papillary muscle 17 . Posterior papillary muscle 18 . Left ventricle