| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
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| RH | radiant heat; radiation hybrid; radiological health; reactive hyperemia; recurrent herpes; regulator... |
| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| AICA | anterior inferior cerebellar artery; anterior inferior communicating artery |
| IO | incisal opening; inferior oblique; inferior olive; internal os; interorbital; intestinal obstruction... |
| chromophobe cells of anterior lobe of hypophysis | Cell's of the adenohypophysis that are devoid of specific acidophilic or basophilic granules when stained with common differential stains. (05 Mar 2000) |
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| middle lobe branch | Middle lobe branch of 1) the right pulmonary artery (arteriae pulmonalis dextrae ); 2) the right superior pulmonary vein (venae pulmonalis dextrae superior ). Synonym: ramus lobi medii. (05 Mar 2000) |
| middle lobe of prostate | The portion of the prostate lying between the urethra and the ejaculatory ducts; indistinct unless hypertrophied. Synonym: lobus medius prostatae, Morgagni's caruncle. (05 Mar 2000) |
| middle lobe syndrome | Atelectasis of the right middle pulmonary lobe, with chronic pneumonitis. (12 Dec 1998) |
| polar lobe | <marine biology> In some molluscs a polar lobe appears as a clear protrusion close to the vegetal pole of the cell prior to the first cleavage and becomes associated with only one of the daughter cells. Removal of the first polar lobe or of any polar lobe that forms at a subsequent mitosis, leads to defects in the embryo, it seems that the polar lobe contains special morphogenetic factors. (18 Nov 1997) |
| polyalveolar lobe | A type of congenital anomaly where a severalfold increase in the total alveolar number leads to congenital lobar emphysema. (05 Mar 2000) |
| corticotropin-like intermediate-lobe peptide | <protein> A product of propiomelanocortin with unknown function. Acronym: CLIP (05 Mar 2000) |
| posterior lobe of hypophysis | It is composed of the infundibulum and the nervous lobe of hypophysis. See: hypophysis. Synonym: lobus posterior hypophyseos, neural part of hypophysis, pars nervosa hypophyseos, posterior lobe of hypophysis. Origin: neuro-+ hypophysis (05 Mar 2000) |
| cuneiform lobe | A lobule on the undersurface of each cerebellar hemisphere, divided by a curved sulcus into a lateral and medial portion; it corresponds to the pyramid of the vermis. Synonym: lobulus biventer, biventral lobule, cuneiform lobe, lobulus biventralis, lobulus cuneiformis. (05 Mar 2000) |
| Home's lobe | The enlarged middle lobe of the prostate gland. (05 Mar 2000) |
| pyramidal lobe of thyroid gland | <anatomy> An inconstant narrow lobe of the thyroid gland that arises from the upper border of the isthmus and extends upward, sometimes as far as the hyoid bone; it marks the point of continuity with the thyroglossal duct. Synonym: lobus pyramidalis glandulae thyroideae, Lallouette's pyramid, Morgagni's appendix, pyramid of thyroid. (05 Mar 2000) |
| Spigelius' lobe | A small lobe of the liver situated posteriorly between the sulcus for the vena cava and the fissure for the ligamentum venosum. Synonym: caudate lobe, Spigelius' lobe. Lobi cerebri, the major divisions of the cerebral hemisphere; they include the frontal, parietal, temporal, and occipital lobes, named for the overlying bones of the skull. Synonym: lobes of cerebrum. Lobus clivi, the clivus monticuli and the posterior crescentic lobules of the cerebellum considered as one lobe. (05 Mar 2000) |
| nervous lobe | The bulbous part of the neurohypophysis attached to the hypothalamus by the infundibulum. It is composed of pituicytes, blood vessels, and terminals of nerve fibres from the supraoptic and paraventricular nuclei. Synonym: lobus nervosus, nervous lobe. (05 Mar 2000) |
| nervous lobe of hypophysis | The bulbous part of the neurohypophysis attached to the hypothalamus by the infundibulum. It is composed of pituicytes, blood vessels, and terminals of nerve fibres from the supraoptic and paraventricular nuclei. Synonym: lobus nervosus, nervous lobe. (05 Mar 2000) |
| supplemental lobe | In dental anatomy, an extra lobe; one that is not included in the typical formation of a tooth. (05 Mar 2000) |