Coronary circulation Brachiocephalic Left common carotid artery perior vena cava subclavian artery Aortic arch Right Ligamentum ary arte Ascending Left pulmonary artery Pulmonary trunk Left pulmonary veins Left atrium Right pulmonary veins Auricle Right atrium Circumflex artery Right coronary artery(in right Left coronary atrioventricular groove) ry(in left atrioventricular groove Anterior cardiac vein Left ventricle Right ventricle Great cardiac vein Marginal artery Small cardiac vein interventricular artery Inferior (in ante vena cava interventricular sulcus) Heart: view from front
Coronary circulation Heart: view from front
Coronary circulation Aorta Superior Right pulmonary artery ulmonary artery Left pulmonary veins Right pulmonary veins Auricle of left atrium Right atrium Left atrium Inferior Great cardiac vein vena cava Right coronar Posterior vein artery(in right of left ventricle atrioventricular groove) Posteri Left ventricle interventricular artery (in posterior interventricular sulcus) Ap Middle cardiac vein Heart: view from diaphragm
Coronary circulation Heart: view from diaphragm
Coronary circulation Coronary circulation receives 5%of the resting cardiac output from the left heart, and mostly returns it to the right heart Heart muscle consumes as much O2 as does equal mass of sm during vigorous exercise Heart tissue extracts maximal amount of o2 at rest The only way to increase of energy is by increasing blood flow Autoregulation: relative stable flow between 70 and more than 150mmHg
Coronary circulation • Coronary circulation receives 5%of the resting cardiac output from the left heart, and mostly returns it to the right heart • Heart muscle consumes as much O2 as does equal mass of SM during vigorous exercise • Heart tissue extracts maximal amount of O2 at rest • The only way to increase of energy is by increasing blood flow • Autoregulation: relative stable flow between 70 and more than 150mmHg