Fig. 1

Mitral valve anatomy. Mitral valve anatomy and adjacent structures. Note that the anterior mitral valve leaflet does not possess scallops and its close proximity to the aortic valve. Each papillary muscle provides chordae tendineae to both valve leaflets. ALPM, anterolateral papillary muscle; PMPM, posteromedial papillary muscle; LAA, left atrial appendage; AV, aortic valve; AMVL, anterior mitral valve leaflet; PMVL, posterior mitral valve leaflet