The coronary circulation consists of the coronary arteries, which branch off of the aorta and carry oxygen-rich blood to the heart muscle; and coronary veins, which carry deoxygenated blood to the coronary sinus, which empties into the right atrium.he coronary circulation consists of the coronary arteries, which branch off of the aorta and carry oxygen-rich blood to the heart muscle; and coronary veins, which carry deoxygenated blood to the coronary sinus, which empties into the right atrium.
Quick Answer. The differences between micro- and macro-marketing pertain to the scope of a businessâ approach. Macro-marketing takes a global view while micro-marketing works on a smaller scale. Continue Reading.
The main difference between microeconomics and macroeconomics is scale. Microeconomics studies the behavior of individual households and firms in making decisions on the allocation of limited resources. Another way to phrase this is to say that microeconomics is the study of markets.