HHP 1110 Lecture Notes - Small Cardiac Vein, Middle Cardiac Vein, Great Cardiac Vein

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 1110

Document Summary

The heart: coronary circulation & conduction system ch 22b the coronary circulation overview. The heart does not use the blood within its chambers for its own needs. The right & left coronary arteries travel within the coronary sulcus & supply heart wall w/ oxygen & nutrients. Branch off ascending aorta just superior to aortic semilunar valve right coronary artery. Right marginal artery: supplies the right border of the heart. Posterior interventricular artery: supplies posterior surfaces of the left & right ventricles left coronary artery. Anterior interventricular artery (left anterior descending artery): anterior surface of ventricles, interventricular septum. Circumflex artery: left atrium & ventricle coronary veins. Venous return of blood from the heart wall occurs through 3 major veins: great cardiac vein, middle cardiac vein, small cardiac vein. Coronary artery disease: atherosclerosis of the coronary arteries. Fatty plaque formation decreases blood supply to the myocardium. Risk factors - high bp, smoking, high cholesterol levels, diabetes, inactivity & family history.