"location: epicardium, myocardium, endocardium"
"blood supply: epicardial coronary arteries"
"innervation: sympathetic and parasympathetic nervous systems"
"small coronary arteries or pre-arterioles ("
"The small coronary arteries or pre-arterioles form the epicardial component of the coronary microcirculation. The arterioles constitute the functional intramyocardial component of the microcirculation."
"Myocardial blood flow is modulated by the arterial diameters and tone of pre-arterioles and arterioles. The tone is high under resting conditions 2. A decrease in tone and increase in arteriolar diameter allows for a rise in myocardial blood flow and thus can deal with increased metabolic requirements of the myocardium 2."
"The coronary pre-arterioles respond to wall-shear stress and maintain the perfusion pressure of arterioles and account for up to 25% of the coronary vascular resistance."
"location: epicardium, myocardium, endocardium"
"blood supply: epicardial coronary arteries"
"innervation: sympathetic and parasympathetic nervous systems"
Expected headings
"Coronary angiography"
"There is a high heterogeneity of local perfusion and coronary microcirculation within different regions of the heart also within transmural layers 2."
"Coronary vasodilation and microvascular resistance can be assessed with coronary flow reserve (CFR) and the index of microvascular resistance (IMR). An impaired coronary flow reserve (CFR"