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The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over.
circulatory system, system that transports nutrients, respiratory gases, and metabolic products throughout a living organism, permitting integration among the various tissues.
The circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate.
The circulatory system, also called cardiovascular system, is a vital organ system that delivers essential substances to all cells for basic functions to occur.
The cardiovascular system includes the heart, arteries, capillaries, and veins. It plays a vital role in supplying blood with oxygen and nutrients throughout the body. Problems with the cardiovascular system are common, but many are preventable.
Learn more about how the circulatory system works, what it consists of, and the diseases that can affect your heart and blood vessels.
View an interactive 3D model of the circulatory system and its major components, including the heart. Also discover conditions that affect the circulatory system.
The circulatory system, also known as the cardiovascular system, consists of the organs and fluids that transport materials like oxygen and nutrients throughout the body. All vertebrates have a closed circulatory system in which the blood plasma and cells remain within blood vessels.
human cardiovascular system, organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart.
circulatory system, System that transports nutrients, respiratory gases, and metabolic products throughout the body. In humans, blood remains within a closed cardiovascular system composed of the heart, blood vessels, and blood. Arteries carry blood away from the heart under high pressure exerted by the heart’s pumping action.