| physiological | Of or pertaining to physiology; relating to the science of the functions of living organism; as, physiological botany or chemistry. Source: Websters Dictionary (01 Mar 1998) |
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| physiological adaptation | A peculiarity of the basic physical and chemical activities that occur in cells and tissues of a species, which results in it being better fitted to its environment (for example, ability to absorb nutrients under low oxygen tensions). (09 Oct 1997) |
| physiological anatomy | Anatomy studied in its relation to function. Synonym: morphophysiology, physiological anatomy. (05 Mar 2000) |
| physiological chemistry | The scientific study of the chemistry of living cells, tissues, organs and organisms. (09 Oct 1997) |
| physiological drives | Those drives such as hunger and thirst which stem from the biological needs of an organism. Synonym: primary drives. (05 Mar 2000) |
| physiological homeostasis | bernard-Cannon homeostasis |
| physiological intracranial calcification | <radiology> Pineal gland, habenular commisure, choroid plexus, dura, pacchionian bodies, basal ganglia and dentate nucleus (12 Dec 1998) |
| physiological processes | The functions of living organisms and their parts, and the physical and chemical factors and processes involved. (12 Dec 1998) |
| physiological sphincter | A section of a tubular structure that acts as if it has a band of circular muscle to constrict it, although no such specialised structure can be found on morphological examination. Synonym: functional sphincter, radiological sphincter. (05 Mar 2000) |
| bar screen | A screen made of parallel bars set 3/4" to 2" apart used to filter out large objects. (05 Dec 1998) |
| Bjerrum screen | A flat, usually black surface used to measure the central 30 degrees of the field of vision. Synonym: Bjerrum screen. (05 Mar 2000) |
| rare-earth screen | An intensifying screen made of a rare-earth oxide phosphor, more efficient than calcium tungstate, especially at the higher kilovoltages used in modern radiography. (05 Mar 2000) |
| vestibular screen | A screen made of acrylic resin that covers the labial or buccal surfaces of one or both dental arches; used to treat oral habits and to stimulate tooth movement by using perioral muscle force. (05 Mar 2000) |
| Hess screen | A screen used in the measurement of ocular deviation. (05 Mar 2000) |
| screen | 1. To provide with a shelter or means of concealment; to separate or cut off from inconvience, injury, or danger; to shelter; to protect; to protect by hiding; to conceal; as, fruits screened from cold winds by a forest or hill. "They were encouraged and screened by some who were in high comands." (Macaulay) 2. To pass, as coal, gravel, ashes, etc, through a screen in order to separate the coarse from the fine, or the worthless from the valuable; to sift. 3. To examine a group of objects methodically, to separate them into groups or to select one or more for some purpose. As (a), To inspect the qualifications of candidates for a job, to select one or more to be hired. (b) (Biochem, Med) To test a large number of samples, in order to find those having specific desirable properties; as, to screen plant extracts for anticancer agents. Origin: Screened; Screening. 1. Anything that separates or cuts off inconvience, injury, or danger; that which shelters or conceals from view; a shield or protection; as, a fire screen. "Your leavy screens throw down." (Shak) "Some ambitious men seem as screens to princes in matters of danger and envy." (Bacon) 2. A dwarf wall or partition carried up to a certain height for separation and protection, as in a church, to separate the aisle from the choir, or the like. 3. A surface, as that afforded by a curtain, sheet, wall, etc, upon which an image, as a picture, is thrown by a magic lantern, solar microscope, etc. 4. A long, coarse riddle or sieve, sometimes a revolving perforated cylinder, used to separate the coarser from the finer parts, as of coal, sand, gravel, and the like. 5. A netting, usu. Of metal, contained in a frame, used mostly in windows or doors to allow in fresh air while excluding insects. Screen door, a door of which half or more is composed of a screen. Screen window, a screen fitted for insertion into a window frame. 6. The surface of an electronic device, as a television set or computer monitor, on which a visible image is formed. The screen is frequently the surface of a cathode-ray tube containing phosphors excited by the electron beam, but other methods for causing an image to appear on the screen are also used, as in flat-panel displays. 7. The motion-picture industry; motion pictures. "A star of stage and screen." Origin: OE. Scren, OF. Escrein, escran, F. Ecran, of uncertain origin; cf. G. Schirm a screen, OHG. Scrim, scern a protection, shield, or G. Schragen a trestle, a stack of wood, or G. Schranne a railing. Source: Websters Dictionary (01 Mar 1998) |