Coronary Arteries and Cardiac Veins

Question 1

Left aortic sinus

Answer 1

Left coronary artery

Question 2

Right aortic sinus

Answer 2

Right coronary sinus

Question 3

RCA

Answer 3

RA 
RV 
SAN 
AVN 
interatrial septum 
some of LA 
posterior 1/3 of interventricular septum 
some of posterior LV

Question 4

LCA

Answer 4

left main stem

short

Question 5

Left coronary artery - two terminal branches

Answer 5

Circumflex

Anterior interventricular

Question 6

Circumflex artery branches

Answer 6

left marginal

posterior left ventricular

Question 7

LCA branches

Answer 7

circumflex coronary artery
diagonal artery
LAD - left anterior interventricular

Question 8

LCA supply areas

Answer 8

Most of LA
Most of LV
Most of interventricular septum - AV bundle + branches

Question 9

end arteries

Answer 9

do not interconnect - any anastomoses are poor

borders between viable + infarcted myocardium are very distinct in occlusion

Question 10

Dominance

Answer 10

artery that gives rise to the posterior interventricular artery
- majority = RCA

Question 11

Coronary artery bypass grafting

Answer 11

Uses saphenous vein + left internal thoracic artery = redirect blood around the blockage

Question 12

Great cardiac vein

Answer 12

travels with LAD -> circumflex = coronary sinus

Question 13

Middle cardiac vein

Answer 13

travels with posterior interventricular artery = coronary sinus

Question 14

Small cardiac vein

Answer 14

travels with RCA into lower anterior section of coronary sulcus = coronary sinus

Question 15

Lympatic drainage of heart

Answer 15

follows coronary arteries

drain into brachiocephalic + tracheobronchial