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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 a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks
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 | Congenital Heart Defects (CHDs) | CDC The heart is an organ, about the size of a fist The heart is made of muscle and pumps blood through the body 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
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 The blood circulating through the body delivers oxygen and nutrients to the tissues of the body and removes waste products (such as carbon dioxide) from
Heart anatomy: Structure, valves, coronary vessels | Kenhub The heart is a muscular organ that pumps blood around the body by circulating it through the circulatory vascular system It is found in the middle mediastinum, wrapped in a two-layered serous sac called the pericardium