Mindblown: a blog about philosophy.
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Grating
In spectrophotometry, the element used in a monochromator that disperses white light into the visible spectrum.
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Grasper
A device used to grab and hold tissue (e.g., during laparoscopic surgery).
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Plantar grasp
A type of prehension involving the toes, which curl forward in response to pressure from the examiner’s finger across their base. This normal newborn reflex usually disappears by age 8 to 9 months. The reflex reappears in adults with frontal lobe diseases or dementia.
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Pincher grasp
The apposition of the thumb and index finger to pick up small objects. This fine motor skill is a developmental milestone usually attained by 10 months of age.
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Grasp
A specific type of prehension involving the fingers, the palmar surface, or both.
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Graphite
One of the allotropes of carbon. Graphite is considered the purest of the forms of coal-anthracite.
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Graphesthesia
The ability to recognize outlines, numbers, words, or symbols traced or written on the skin.
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Granzyme
Any of a family of proteases stored in the granules of cytotoxic T lymphocytes. They are involved in cytolytic functions.
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Granulosis rubra nasi
A disease of the skin of the nose, characterized by a moist erythematous patch on numerous macules. The disease is caused by an inflammatory infiltration about the nose, with slightly elevated papules and dilated sweat glands.
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Granulosis
A mass of minute granules.
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