Category: A
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Acromioclavicular ligament
The ligament supporting the acromioclavicular joint; it joins the acromial process of the scapula and the distal end of the clavicle and, in combination with the coracoclavicular ligaments, holds the clavicle down.
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Accessory ligament
A ligament that supplements another, especially one on the lateral surface of a joint. This type of ligament lies outside of and independent of the capsule of a joint.
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Life care retirement community
A residential facility, typically for older adults, that provides several levels of supervision and access to registered health care professionals. LCRCs are typically at a location that combines independent apartments with assisted living residences and skilled nursing facilities. Residents relocate from one level of care to another, depending on their immediate needs for assistance. For…
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Acute hemorrhagic leukoencephalitis
A neurological syndrome marked by rapidly progressive neurological findings, associated with asymmetric inflammatory pathological changes in the brain, and bleeding.
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Acute myeloid leukemia
Any of a group of hematological malignancies in which neoplastic cells develop from myeloid, monocytic, erythrocytic, or megakaryocytic precursors. AML is four times more common in adults than acute lymphocytic leukemia (ALL). In 2008, the American Cancer Society estimated about 13,300 Americans would be diagnosed with AML, and that the disease would cause 8,800 deaths.…
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Apochromatic lens
A lens that corrects both spherical and chromatic aberrations.
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Aplanatic lens
A lens that corrects spherical aberrations.
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Asynchronous learning
A method of instruction in which students access course material and engage with instructors and other students from geographically disparate locations or at different times. Techniques in asynchronous learning include on-line chats, threaded discussions, or self-directed learning modules. Before the world wide web, asynchronous learning was called correspondence education.
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Acute lead encephalopathy
A syndrome seen mostly in children, following the rapid absorption of a large amount of lead. Initially there is clumsiness, vertigo, ataxia, headache, insomnia, restlessness, and irritability. As the syndrome progresses, vomiting, agitation, confusion, convulsions, and coma will occur. A sudden and marked increase in intracranial pressure accompanies these symptoms. Sequelae include permanent damage to…
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Lawn
A layer of microorganisms growing on a culture medium.