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Heart - Wikipedia The heart is a muscular organ found in humans and other animals This organ pumps blood through the blood vessels [1] The heart and blood vessels together make the circulatory system [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs [3]
Heart | Structure, Function, Diagram, Anatomy, Facts | Britannica Heart, organ that serves as a pump to circulate the blood It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds Learn more about the heart in this article
American Heart Association | To be a relentless force for a world of . . . Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living
Heart Anatomy, Function, and Blood Circulation - WebMD Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life
How the Heart Works - What the Heart Looks Like - NHLBI, NIH Your heart is in the center of your chest, near your lungs It has four hollow chambers surrounded by muscle and other heart tissue The chambers are separated by heart valves, which make sure that the blood keeps flowing in the right direction
Heart and Blood Vessel Disorders - The Merck Manuals The heart and blood vessels constitute the cardiovascular (circulatory) system The heart pumps blood to the lungs so the blood can pick up oxygen, and then pumps oxygen-rich blood to the body
How the Heart Works | Congenital Heart Defects (CHDs) | CDC Blood is carried through the body in blood vessels called arteries and veins The process of moving blood through the body is called circulation Together, the heart and vessels make up the cardiovascular system The heart has four chambers (two atria and two ventricles)