Coronary Arteries - Vessels of the Heart

Coronary arteries:

heart receives blood from a group of arteries called as coronary arteries. these are thin arteries that supplies pure blood to the heart muscles.

they contain pure blood.
these are

1: Right coronary artery RCA

(it is divided into two branches Right marginal artery and
posterior descending arteryLAD)

and

2: Left coronary artery

(it is divided into two branches circumflex arteryand
left anterior descending arteryLAD)

coronary arteries arise from the aorta cloase the point where aorta and the left ventricle meet.