1. ANATOMY AND PHYSIOLOGY 1 CORONARY CIRCULATION www.medicinemcq.com

2. Coronary arteries 2 2 - Right and left Arise from the ascending aorta www.medicinemcq.com 3. 3 www.medicinemcq.com 4. 4 www.medicinemcq.com 5. Coronary circulation is end- arterial 5 Anastomosis between right and left coronary arteries Insignificant May become prominent in coronary artery disease www.medicinemcq.com 6. Right coronary supplies 6 Most of the right ventricle Right atrium Conducting system Posterior third of the IVS Part of the left ventricular diaphragmatic aspect Part of the left atrium www.medicinemcq.com 7. Left coronary supplies 7 Most of the left ventricle Most of the left atrium Anterior two-thirds of the IVS Narrow strip of right ventricle www.medicinemcq.com 8. AV node usually supplied by 8 RCA - 85% LCA 15% www.medicinemcq.com 9. Left coronary artery 9 Divides into two main rami in the atrioventricular or coronary sulcus Anterior interventricular (descending) ramus Descends in the interventricular sulcus and reaches the apex Turns round the apex into the posterior interventricular sulcus Meet the terminal twigs of the posterior interventricular artery of the right coronary artery www.medicinemcq.com 10. Circumflex artery 10 Runs left in the atrioventricular sulcus Continues round the left cardiac border into the posterior part of the atrioventricular sulcus For rest of the slides, visit www.medicinemcq.com > Cardiogy