Coronary arteries/vein Flashcards
What is origin of right coronary artery?
Right aortic sinus
What is distribution of right coronary artery?
Right atrium, SA and AV nodes, posterior portion in IV septum
What is origin of artery to sinoatrial node?
60% from right coronary artery
What is distribution of artery to sinoatrial node?
SA node and pulmonary trunk
What is origin of right marginal artery
Right coronary artery
What is distribution of right marginal artery?
Right ventricle and apex
What is origin of posterior interventricular (posterior descending) artery?
Right coronary artery
What is distribution of posterior interventricular artery?
Right and left ventricles, IV septum
What is origin of artery to AV node?
right coronary artery (80% of time)
What is distribution of artery to AV node?
AV node
What are the branches of the right coronary artery?
Artery to SA node, right marginal, posterior interventricular, artery to AV node
What is the origin of the left coronary artery?
Left aortic sinus
What is distribution of left coronary artery?
Left atrium and ventricle, IV septum, AV bundle & AV node
What is origin of artery to sinoatrial node (L)?
40% from circumflex branch
What is distribution of artery to sinoatrial node (L)?
SA node and left atrium
What is origin of anterior interventricular (left anterior descending)?
Left coronary artery
What is distribution of anterior interventricular (LAD)?
Right and left ventricles and IV septum
What is origin of circumflex artery?
left coronary artery
What distribution of circumflex artery?
Left atrium and ventricle
What is origin of left marginal artery (if present)?
Left circumflex
What is distribution of left marginal artery?
Left border of left ventricle
What does the right coronary artery supply (7)?
Right atrium Most of right ventricle Diaphragmatic surface of left ventricle Posterior 1/3 of AV septum SA node in 60% of people AV node in 80% of people
What does the left coronary artery supply (4)?
Left atrium
Most of left ventricle
Anterior 2/3 of AV septum (including AV bundles)
SA node in 40% of people
Where does most of the blood from the coronary circulation return?
Returns to right atrium through either the coronary sinus or by a pair of small, anterior cardiac veins
What veins does the coronary sinus receive?
Great cardiac vein, middle cardiac vein, left marginal vein, left posterior ventricular vein, small cardiac vein.
Does NOT receive: anterior cardiac vein and smallest cardiac veins
What is the direct continuation of the great cardiac vein?
Coronary sinus
