Instructor: Debbie Notari. Understanding a story's theme is critical to deciphering an author's message in a particular piece of writing. In this lesson, we will examine the idea of theme and look at some examples in actual literary works.
Location: The coronary system is comprised of arteries, arterioles, capillaries, venules and veins. The coronary arteries originate as the right and left main coronary arteries which exit the ascending aorta just above the aortic valve (coronary ostia).These two branches subdivide and course over the surface of the heart (epicardium) as they traverse away from the aorta.ocation: The coronary system is comprised of arteries, arterioles, capillaries, venules and veins. The coronary arteries originate as the right and left main coronary arteries which exit the ascending aorta just above the aortic valve (coronary ostia).
Discussion Classification of the anomaly. Anomalous origin of the left main coronary artery from the right sinus of Valsalva can be classified into four major groups according to the course taken by the left main artery in relation to the aorta and pulmonary trunk en route to the left side of the heart.