THIS IS A 4-PARTER!!!! Name the feature at the “X” [feature]…

THIS IS A 4-PARTER!!!! Name the feature at the “X” [feature], its bone [bone], and indicate if you are more likely to hear the… …aortic  /  bicuspid  /  pulmonic  /  tricuspid  [specific-valve-left] valve at the arrow-tip, and if that is a… …atrioventricular  /  semilunar  [valve-type-left] type of valve.  Don’t forget the doppler effect!