Left atrium


The upper right chamber of the heart. The left atrium receives oxygenated blood from the lungs and pumps it down into the left ventricle which delivers it to the body.

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    The left atrium and left ventricle.

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    A form of congenital heart disease in which the whole left half of the heart (including the aorta, aortic valve, left ventricle and mitral valve) is underdeveloped (hypoplastic). Blood returning from the lungs has to flow through an opening in the wall between the upper chambers of the heart (an atrial septal defect). The right […]

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    The duct that drains bile from the left half of the liver and joins the right hepatic duct to form the common hepatic duct.

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    The left lower chamber of the heart that receives blood from the left atrium and pumps it out under high pressure through the aorta to the body.

  • Left-handed

    The preferential use of the left hand for most fine manual tasks. Approximately 10% of the population is left-handed. In French, the word for left is gauche meaning clumsy or awkward and the word for right is droit. In Latin the word for left is sinister and that for right is dexter (as in dexterity), […]


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