Heart: the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body; "he stood still, his heart thumping wildly".
Source: WordNet 2.1
Heart: hollow, muscular organ that maintains the circulation of the blood.
Source: CRISP
Heart: The hollow, muscular organ that maintains the circulation of the blood.
Source: MESH OBO (Open Biomedical Ontologies)
Heart: The hollow, muscular organ that maintains the circulation of the blood.
Source: MeSH 2007
Heart (organ): The heart is a vital internal organ located in the pericardium in the thorax of the chest. The heart is a critical organ of the circulatory and cardiopulmonary system. The primary job of the heart is to pump oxygenated blood from the lungs into and throughout the body and pump deoxygenated blood from the body to the lungs, where it is exchanged for freshly oxygenated blood.
The heart is made of muscle and includes four pumping chambers: the left ventricle, right ventricle, left atrium, and right atrium. In a healthy person, the chambers of the heart work together to pump and move blood in a regular, strong rhythm that is activated by an electrical conduction system.
The heart receives deoxygenated blood from the body through the superior and inferior vena cavas. Blood then flows through the right atrium and is pumped through the right ventricle into the pulmonary artery to the lungs, where gas exchange occurs and the blood is re-oxygenated. The heart receives oxygenated blood from the lungs from the pulmonary vein. It enters the left atrium and is pumped through the left ventricle and the aorta to the rest of the body.
Conditions that afflict the heart include myocardial infarction, infection, heart disease, cardiac arrhythmias, angina, trauma, heart failure, birth defects, cardiac arrest, and atherosclerosis.
Heart (organ): Oxygen is vital to life as it provides fuel for all the body's functions. The heart's role is to pump oxygen-rich blood to every cell in the body. The blood vessels --- a network of interconnecting arteries, arterioles, capillaries, venules, and veins --- provide the pathway in which blood travels.
Your heart and blood vessels make up your circulatory (SIR-kyoo-la-TOR-ee) system. Your heart is a big muscle that pumps blood through your body. Your heart pumps blood carrying oxygen to large blood vessels, called arteries (AR-ter-eez), and small blood vessels, called capillaries (KAP-ih-lair-eez). Other blood vessels, called veins, carry blood back to the heart. (Source: excerpt from Keep your heart and blood vessels healthy: NIDDK)
Heart (organ): See Heart (organ information).
More information on organs: Heart:
Source - WordNet 2.1
Source - MeSH 2007
Source - MeSH 2007
Source - CRISP
Source - WordNet 2.1
Source - CRISP
Source - WordNet 2.1
Source: CRISP
Source: CRISP
The following list attempts to classify Heart into categories where each line is subset of the next.
Source: WordNet 2.1
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