coronary sinus is the area of the heart that receives its blood supply from the left circumflex artery.
coronary sinus is the area of the heart that receives its blood supply from the left circumflex artery.
which area of the heart receives its blood supply from the left circumflex artery?
coronary sinus
the anterolateral papillary muscle more frequently receives two blood supplies: left anterior descending (lad) artery and the left circumflex artery (lcx). 









































it is therefore more frequently resistant to coronary ischemia (insufficiency of oxygen-rich blood). on the other hand, the posteromedial papillary muscle is usually supplied only by the pda. this makes the posteromedial papillary muscle significantly more susceptible to ischemia. the clinical significance of this is that a myocardial infarction involving the pda is more likely to cause mitral regurgitation.









































section::::function.:changes in diastole.
coronary circulation
the blood supply of the av node is from the atrioventricular nodal branch. the origin of this artery is most commonly (80-90% of hearts) a branch of the right coronary artery, with the remainder originating from the left circumflex artery. this is associated with the dominance of the coronary artery circulation. in "right-dominant" individuals the blood supply is from the right coronary artery while in left dominant individuals it originates from the left circumflex artery.









































section::::structure.:development.
atrioventricular node