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Bookmark or Share- How the Heart Works - What the Heart Looks Like - NHLBI, NIHThe heart is made of three layers of tissue. Endocardium is the thin inner lining of the heart chambers and also forms the surface of the valves. Myocardium is the thick middle layer of muscle that allows your heart chambers to contract and relax to pump blood to your body.
- Heart Anatomy: Diagram, Blood Flow and Functions - MedicineNetLearn about the anatomy of the heart and how the heart works, including how blood flows through the heart and lungs, where it is located, what your arteries look like, and how the heart beats.
- Heart: Anatomy & Function - Cleveland ClinicYour heart’s main function is to move blood throughout your body. Blood brings oxygen and nutrients to your cells. It also takes away carbon dioxide and other waste so other organs can dispose of them. Your heart also: Controls the rhythm and speed of your heart rate. Maintains your blood pressure.
- Heart - WikipediaThe heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels. [1] 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 ...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.
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