Coronary Circulation and tissue perfusion

Question 1

describe the anatomy of coronary arteries

Answer 1

come out of each side of the aorta
right coronary artery and left main stem
RCA splits to the marginal branch
left main stem splits into circumflex (which splits into posterior inter ventricular branch) and left anterior descending artery (anterior descending)

Question 2

where do coronary vessels drain in to

Answer 2

coronary sinus and then the inferior vena cava

Question 3

what are the sizes of these vessels
pre-arterioels
arterioles
capillaries

Answer 3

200-500 microns
40-100 microns
less than 40 microns

Question 4

describe the blood flow in the coronary system during sys/dia

Answer 4

most of left coronary flow occurs during diastole but right its fairly even