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.
Macro environment can be classified into economic environment and non-economic environment. Since the business is basically an economic activity, economic environment of business both national and international gets importance.