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).
The heart and the coronary arteries. Coronary arteries are blood vessels that provide oxygen-rich blood and other nutrients to the heart muscle. The coronary arteries attach to and wrap around the heart's surface. The left coronary artery branches off into smaller arteries. The most prominent ones are the: Left anterior descending artery, which supplies blood to the front of the heart. Left circumflex artery, which encircles the ..