Probe position: Apex point (around the 6th intercostal space), with the probe marker pointing left. You will see the following structures:
IVS = interventricular septum, RV = right ventricle, LV = left ventricle, TVSL = tricuspid valve septal leaflet, TVAL = tricuspid valve anterior leaflet, RA = right atrium, MVAL = mitral valve anterior leaflet, MVPL = mitral valve posterior leaflet, IAS = interatrial septum, LA = left atrium, LIPV = left inferior pulmonic vein, RSPV = right superior pulmonic vein.
Image courtesy of Dr David Carroll, radiopaedia.org. From the case