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Pacinian corpuscle

Noun 1. One of the four major types of mechanoreceptor. They are nerve endings in the skin responsible for sensitivity to vibration and pressure. Vibrational role may be used to detect surface, e.g., rough vs. smooth. Lamellar corpuscles are also found in the pancreas, where they detect vibration and possibly very low frequency sounds. ( 2. Rapidly adapting mechanoreceptors found in subcutaneous tissue beneath both hairy and glabrous skin. Pacinian corpuscles contain an afferent nerve fibre surrounded by a capsule with multiple concentric layers. They have large receptive fields and are most sensitive to high-frequency stimuli, such as vibration. ( 3. A specialized bulb-like nerve ending located in the subcutaneous tissue of the skin; occurs abundantly in the skin of palms and soles and joints and genitals. ( 4. A microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration. ( Syn: Lamellar corpuscles Word origin: 1875–80; after Filippo Pacini (1812–83), Italian...

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/ˈpalit/ Noun, pl. palates 1. In vertebrate anatomy, the roof of the mouth, separating the oral and nasal cavities. It consists of an anterior hard palate of bone and, in mammals, a posterior soft palate that has no skeletal support and terminates in a fleshy, elongated projection called the uvula. ( 2. A person’s appreciation of taste and flavor. (Google Dictionary) 3. (figuratively) relish; taste; liking (from the mistaken notion that the palate is the organ of taste). ( 4. (figuratively) Mental relish; intellectual taste. ( 5. (Botany) A projection in the throat of such flowers as the snapdragon. ( Word Origin: from Old French palat and directly from Latin palatum “roof of the mouth,” perhaps of Etruscan origin. Popularly considered the seat of taste, hence transferred meaning “sense of taste” (late 14c.), which also was in classical...

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Paleo –

/ˈpalɪəʊ,ˈpeɪlɪəʊ/ Prefix 1. Ancient, early, prehistoric, primitive. ( 2. Older or ancient, especially relating to the geological past. (Google Dictionary) Word origin: Before vowels pale– word-forming element used in scientific combinations (mostly since c.1870), from Greek palaio-, comb. form of palaios “old, ancient,” from palai “long ago, far back,” related to palin “again, backwards,” tele– “far off, at a...

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