The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.he systemic circulation is a major portion of the circulatory system. The network of veins, arteries and blood vessels transports oxygenated blood from the heart, delivers oxygen and nutrients to the body's cells and then returns deoxygenated blood back to the heart.
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The Village of Oak Harbor, Ottawa County, Ohio. You are here: The Village of Oak Harbor, with a population of 2,759, is located at the hub of the industrial Midwest. The Village lies on the north bank of the Portage River, in north central Ohio. It is 25 miles southeast of Toledo, 80 miles south of Detroit, MI, 120 miles north of Columbus, and 90 miles west of Cleveland.