Author: Glossary
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Uncinate bundle of russell
Fibers that arise in the fastigial superior cerebellar peduncle and pass interiorly to the vestibular nuclei and reticular formation by which impulses are carried to muscles, especially those of the neck and body.
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Uncinariasis
The condition of being infested with hookworms (i.e., worms of the genus Uncinaria). An illness resulting from an infection by a parasitic roundworm from the Uncinaria genus, also known as hookworm disease.
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Uncaria tomentosa
A medicinal plant, known popularly as cat’s claw or una de gato. Its extracts include alkaloids that are used as an anti-inflammatory for arthritis and also have effects on thinking, concentration, and sedation. It has also been promoted as a treatment for AIDS, without scientific validation.
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Umbra
The edge of the radiographic image proper. The inherent quality that manifests on a radiograph, distinct from its penumbra, is the geometrical acuity of the depicted objects.
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Umbo of tympanic membrane
The central depressed portion of the concavity on the lateral surface of the tympanic membrane. It marks the point where the malleus is attached to the inner surface.
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Umbilical souffle
A hissing sound said to arise from the umbilical cord.
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Umani
The sense of taste triggered by glutamates, such as monosodium glutamate (MSG). It has been proposed as a fifth taste sensation, in addition to the traditionally recognized tastes (bitter, salty, sour, sweet).
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Ultraviolet therapy
Treatment with ultraviolet radiation.
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Real-time ultrasound
A sonographic procedure that provides rapid, multiple images of an anatomical structure in the form of motion.
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Quantitative ultrasound
Measurement of the density of a body tissue (e.g., bone) by determining how rapidly sound travels through the tissue and how different sonic wavelengths are absorbed. QUS is used to diagnose osteopenia and osteoporosis.