Coronary blod flow

Question 1

which region does the GREAT CARDIAC VEIN drain and which artery does it run with?

where does it empty into?

Answer 1

it drains the LEFT side of the hear and runs with the left anterior descending artery (LAD = anterior interventricular sulcus) AND the left cicircumflex artery

empties into coronary sinus

Question 2

what is the following structures and their locations

aortic sinus
coronary sinus

Answer 2

aortic sinus is the origin of coronary arteries

coronary sinus is located in the coronary sulcus (posterior), where the veins empty into

Question 3

what structure does the posterior cardiac vein drain?

Answer 3

drains the left marginal artery

Question 4

describe the path of the left coronary artery

Answer 4

1. originate from the left aortic cusp
2. short left coronary artery (2cm travels in coronary sulcus)
3. bifurcates into left circumflex artery (LCX) = supplies posterior
4. left anterior descending artery (LAD) - anterior interventricular ulcus
5. LCX branches = left marginal artery in the posterior to supply the left marginal sites

Question 5

which veins directly drains into the right atria?

Answer 5

1. the anterior veins on the right heart

2. the smallest veins in the 4 chambers, they form a microcirculation

Question 6

where is the crux?

Answer 6

posterior of the heart, at the intersection of the interventricular septum and the coronary sulcus

Question 7

describe the path of the right coronary artery

Answer 7

1. originates at the aortic sinus, the artery opening is located behind the right cusp of the aortic valve
2. branches near the base = sinoatrial nodal branch
3. branches near the apex = right marginal branch
4. right marginal branch bend to the posterior surface = posterior interventricular branch
5. at the crux = RCA gives off atrioventricular nodal branch

Question 8

which artery does the middle cardiac vein run with

Answer 8

the right posterior interventricular artery and the rest of the RCA

Question 9

whcih artery does the small cardiac vein run with

Answer 9

the right marginal branch artery