(14) Coronary Artery Circulation

anastomotic channels can develop in the heart as an adaptation to ____

ischemia

the LCA splits into the ___

LAD, LCX

the 2 coronary arteries branching off of the ascending aorta are ____

LCA, RCA

the problem with collaterals, is that when you have atherosclerosis of one, you've probably got atherosclerosis in ___

all

without compression, the coronary arteries wuold have the same pressure as the ___

aorta

inner subendocardial vessels ____ compressed during systole

are

surface epicardial vessels ___ compressed during systole

are not

the coronary arteries arise from the ____ behind the cusps

ascending aorta

4 causes of death in acute MI

decreased CO, V-fib, rupture of affected area , back-up of blood into venous system

the mechanism by which the coronary arteries dilate more than normal is ___

local factors

once squeezing ends, the coronary arteries compensate and dilate ___ than normal

more

during systole, coronary flow is ____ by contraction of the myocardium during systole

reduced

after scarring, the heart can _____ to accommodate the scar

remodel

anastomotic channels serve as conduits that bridge severe ____ or connect a territory supplied by one epicardial coronary artery with that of another

stenoses

an ____ infarct is more likely

subendo

blood vessels feeding capillaries in the heart are compressed during _____

systole