Figure 25

Morphology of the normal aortic valve.
AMBL= anterior mitral valve leaflet; Ao= aorta; AV= aortic valve; LV= left main; N= noncoronary cusp; LA= left atrium; R= right; RC= right coronary artery. Arrows point to line of closure. Portion of aortic cusp above the line of closure is called the lunula.

From BF Waller: Morphologic aspects of valvular heart disease: Part I. Curr Prob Cardiol IX:13, 1985.

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