The Richter scale doesn't measure quake damage (see: Mercalli Scale) which is dependent on a variety of factors including population at the epicentre, terrain, depth, etc.
The circulatory system works with the muscular system, the nervous system, and the digestive system. The heart is a muscle so it is part of the muscular system. Also the heart and lungs have nerves so it is also part of the nervous system.
The main function of the circulatory system is to get blood throught the body. Your blood is pumped around by the heart which is the main function in your circulatory system. The heart sends blood through your blood vessels.The circulatory system consists of the heart, blood vessels, lymph, blood, and the lymphatic vessels and glands. Transport gases, like oxygen from the lungs to cells around the body and carbon dioxide from the cells to the lungs. 2  Transport nutrients like glucose. 3  Transport wastes from cells to organs that play the role of eliminating them. 4  It contains cells that fight infections and defend against foreign bodies.