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.
BREAKING DOWN 'Macro Environment'. The macro environment in which a company or sector operates will influence its performance, and the amount of the influence will depend on how much of the company's business is dependent on the health of the overall economy.EFINITION of 'Macro Environment'. The conditions that exist in the economy as a whole, rather than in a particular sector or region. In general, the macro environment will include trends in gross domestic product (GDP), inflation, employment, spending, and monetary and fiscal policy.