Category: P
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Palatine raphe
A line or ridge in the median line of the palate. The raphe appears as a whitish line, which sometimes turns into a slight groove at its posterior end.
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Prison rape
Rape that occurs when the victim is assaulted by another prisoner or by a prison employee.
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Passive range of motion
The possible excursion of motion at a joint, accomplished by an examiner, without any muscle contraction by the patient. This can be measured by a goniometer. The excursion is normally slightly greater than active range of motion. The examiner assesses the end point.
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Pubic ramus
Either of the two barlike processes of the pubic bone that extend laterally and posteriorly from the pubic symphysis. The inferior ramus articulates with the ischium; the superior ramus articulates with the ilium and forms the front of the acetabulum.
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Posterior ramus
The branch of a spinal nerve carrying motor axons to and sensory axons from the deep (intrinsic) muscles of the back and the skin that overlies them.
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Posteroanterior radiograph
A frontal radiograph of the skull. It is used to examine the skull for disease, trauma, and developmental abnormalities.
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Panoramic radiograph
A type of extraoral curved-surface radiograph that shows the entire upper and lower jaws in a continuous single film.
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Primary radiation
That radiation being emitted directly to the patient from an x-ray source. Radiation arriving directly from its source without interaction with matter.
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Photothermal radiation
Radiation of heat by a source of light, as that from an electric bulb.
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Photochemical radiation
Light rays that penetrate tissues only fractions of a millimeter, are absorbed by cells, and cause physical and biological changes. This type of radiation causes surface heating.