Coronary circulation is the circulation of blood in the blood vessels of the heart muscle (myocardium). The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins.These include the great cardiac vein, the middle cardiac vein, the small cardiac vein and the anterior cardiac veins.he vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins. These include the great cardiac vein, the middle cardiac vein, the small cardiac vein and the anterior cardiac veins.
The Marshall Plan, also known as the European Recovery Program, channeled over $13 billion to finance the economic recovery of Europe between 1948 and 1951.
Text Preview. President Truman's decision to drop the atomic bomb on the cities of Hiroshima and Nagasaki were the direct cause for the end of World War II in the Pacific. The United States felt it was necessary to drop the atomic bombs on these two cities or it would suffer more casualties.