Right coronary artery
Branch name Area supplied by it
• Ant. Surface of pulmonary conus (Infundibulum of R vent.)
Right conus artery
• Upper part of anterior Wall of Right ventricle.
• 2 or 3 in number
Anterior ventricular branches
• anterior surface of the right ventricle.
• along the lower margin of the costal surface to reach the
Right marginal artery (RMA)
apex.
• 2 in number
posterior ventricular branches • diaphragmaCc surface of Right ventricle.
• runs toward the apex in the posterior interventricular
groove
• R and L ventricles, Including inferior wall.
posterior interventricular (descending) artery
• branches to the posterior part of ventricular septum.
(PDA)
• large septal branch supplies AV node.
• In 10% of people it’s replaced by a branch from leK
coronary artery
• anterior and lateral surfaces of Right atrium.
The atrial branches
• supplies the SA node.
artery of the sinuatrial node • in 35% of individuals it arises from the leK coronary artery.
Left coronary artery
Branch name Areas supplied by it
• Downward and anterior and to apex.
Anterior interventricular
• the right and leK ventricles.
(le> anterior descending (LAD))
• anterior part of the ventricular septum.
diagonal artery • may arise directly from the trunk of the leK coronary artery.
small le> conus artery • supplies the pulmonary conus.
• winds around the leK margin of the heart in the
The circumflex artery
atrioventricular groove.
le> marginal artery • leK margin of the leK ventricle down to the apex.
Anterior and posterior ventricular
• Supply leK ventricle.
branches
Atrial branches • supply the leK atrium.
Venous Drainage of the Heart
Tributary Proper7es
• begins in the apex and ascends in the anterior
interventricular sulcus.
Great cardiac vein
• then curves to the le> in the coronary sulcus to
terminate in the coronary sinus.
Posterior vein of the le> ventricle -
• begins at the apex
Middle cardiac vein • runs backwards in the posterior interventricular
sulcus and ends in the coronary sinus.
Oblique vein of the le> atrium. -
• begins near the apex
Small cardiac vein • passes along the lower border of the heart Cll the
coronary sulcus where it terminates in the
coronary sinus.
