Diagram, Definition, Location in the Body, and Heart Problems. The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system. The heart has four chambers: The right atrium receives blood from the veins and pumps it to the right ventricle. The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle. The left ventricle (the strongest chamber) pumps oxygen- rich blood to the rest of the body. A web of nerve tissue also runs through the heart, conducting the complex signals that govern contraction and relaxation. Surrounding the heart is a sac called the pericardium. Microsoft SharePoint 2013. SharePoint 2013 is a collaboration platform that offers a simplified user experience and enterprise social media capabilities. Information on starting and financing a business, listing of local SBA offices, news updates, calendar of events and similar agency information. The SBA supports the. Department of Agriculture Home Page. NIFA invests $1.4 million in Health and Safety Education for Rural Communities. Information about wetlands, development of state and tribal programs, funding, monitoring and protecting wetlands, coastal and other types of wetlands.
Education is the process of facilitating learning, or the acquisition of knowledge, skills, values, beliefs, and habits. Educational methods include storytelling.
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