Coronary Artery Anatomy

Question 1

Vessels of the heart

Answer 1

the heart receives its blood supply during diastole

R and L aortic sinus
Left coronary artery
- left circumflex
- left anterior decending

Left circumflex
- left marginal artery

Right coronary artery

• posterior descending artery
• right marginal artery

most people are right dominant (the PDA is a branch of the RCA) but some people re left dominant (PDA is a branch of the left circumflex) and some are co-dominant where it’s an anastomosis of L and R coronary arteries.

Question 2

Lateral

Answer 2

on ECG: I, aVL, V5, V6

blood supply: anterior circumflex artery

Question 3

Inferior

Answer 3

I, II, avF
right coronary artery
posterior intraventricular artery
LV and RV (inferior)

Question 4

ECG - where is the MI?

Answer 4

v1-v2 septal LAD
v3-v4 anterior LAD
v5-v6 apical LAD/2Cx/RCA
I, aVL, lateral LCX
II, avF, III inferior CA

Question 5

te aortic arch

Answer 5

AB(s)CC(s)

• aortic arch
• brachiocephalic
• subclavian (R)
• common carotid (R)
• common carotid (L)
• subclavian (L)

Question 6

Prinzmetal’s angina (PVA)

Answer 6

this is a variant of angina characterised by recurrent episodes of chest pain that usually occurs when a person is at rest, between midnight and early morning.