1. The fibrous cap that forms over an atheromatous plaque has an average Houndsfield value of EIGHTY. 2. What is also known as 'good cholesterol' ? HIGH DENSITY lipoproteins. 3. What are the names of the two vessels of almost equal diameter that arise from the bifurcation of the left main coronary artery? The left ANTERIOR DECENDING artery and the CIRCUMFLEX artery. 4.Coronary DOMINANCE refers to the artery from which the posterior descending artery originates. 5. Which vessel, which arises from the circumflex artery supplies the posterior medial papillary muscle? OBTUSE MARGINAL branches. 6. Which venous structure of the heart runs parallel to the LAD and empties into the coronary sinus? GREAT CARDIAC VEIN 7.HYPERCHOLESTEROLEMIA is the term used to describe high levels of blood cholesterol. 8. Name the four valves of the heart. TRICUSPID , AORTIC , PULMONARY and MITRAL. 9. The P wave on an ECG represents the spread of electrical impulse through the atria, this process is known as DEPOLARISATION. 10. The J in the 'JR' and 'JL' catheters stands for JUDKINS. 11. The P-R interval on an ECG represents the time taken for the electrical impulse to travel from the SINOATRIAL node to the VENTRICULAR MUSCLE. 12. The Mitral valve is located between the left atrium and the left ventricle and is the value most commonly affected by disease. The CHORDAE TENDINAE and the PAPILLARY muscles are the supporting structures for the two leaflets of the valve. 13. AMI is the acronym for ACUTE MYOCARDIAL INFARCTION.