What is the anterior (sternal) surface of the heart?
What is the posterior surface of the heart?
Which layer of the heart is most prone to ischemic injury?
Subendocardial layer because it is the zone furthest from either blood supply. epi-, myocardium are supplied by coronary vessels, while endo cardium is supplied by the blood in the heart.
Where do the branches for the abdominal aorta originate?
T12: celiac trunk
L1: Superior mesenteric
L2: Renal aa
L3: Inferior mesenteric
L4: Aortic bifurcation into common iliac aa
From where do the electrical centers of the heart receive blood?
Sinoatrial node: SA nodal artery from right coronary artery.
Atrioventricular node: AV nodal artery from right coronary artery.