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Heart | Structure, Function, Diagram, Anatomy, Facts . . . 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
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: Anatomy Function - Cleveland Clinic What is the heart? The heart is a fist-sized organ that pumps blood throughout your body It’s your circulatory system ’s main organ Muscle and tissue make up this powerhouse organ
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)
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 Read more about heart valves and how they help blood flow through the heart
Biology of the Heart - Heart and Blood Vessel Disorders . . . 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