2) Coronary CirculationFlow of blood through the coronary vessels-First is the aorta which makes sense that the heart is supplying itself first. Blood flow through the cornary vessels:Resting= 250 ml/min = _________% of cardiac output is going to the heartExercise=1250 ml.min (due to dilation of the coronary vessels) _________l of O2 by the cardiac muscle (Heart needs more blood)Resting or exercise=65% of the O2 in the arterial blood flowing to the heart removed (more efficient)=Efficiency removal (most other tissues only 25% of O2 is removed)______ Flow is the only way to make more O2 available. If oxygenated blood doesn't come to tissues--> tissue death occursNOTE: heart attacks are more likely to occur when exercising. This is because vasodilation is occuring. Dilation of BVS leads to decreased heart rate + blood pressure and in extrem cases--> heart attack

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