| third molar | Eighth permanent tooth in the maxilla and mandible on each side, making it the most posterior tooth in human dentition; usually erupts between the seventeenth and twenty-third years; the roots are often fused, the separation being marked only by grooves; because it tends to erupt in an anterosuperior direction, the lower third molar often becomes impacted against the lower second molar; it is common for one or more third molar to fail to develop. Synonym: dens serotinus, molaris tertius, dens sapientiae, wisdom tooth. (05 Mar 2000) |
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| twelfth-year molar | The second permanent molar tooth. (05 Mar 2000) |
| first molar | First permanent molar, sixth permanent tooth or fourth deciduous tooth in the maxilla and mandible on either side of the midsagittal plane of the head following the arch form. (05 Mar 2000) |
| 12 year molar | <dentistry> Another name for your second molar (05 Mar 2000) |
| 6 year molar | <dentistry> Another name for your first molar (05 Mar 2000) |
| accessory lacrimal glands | Small, compound, branched, tubular glands located in the middle part of the lid (Wolfring's glands, 1872, or Ciaccio's glands, 1874) and along the superior and inferior fornices of the conjunctival sac (Krause's glands, 1854). These accessory glands are just scattered scraps of lacrimal gland tissue; all of them produce the same kind of tears and debouch on to the conjunctival surface. Henle's and Baumgarten's "glands" are in fact not glands at all, but mere epithelial invaginations. Synonym: glandulae lacrimales accessoriae. (05 Mar 2000) |
| accessory suprarenal glands | Isolated, often minute, masses of suprarenal tissue sometimes found near the main glands or in the broad ligament or the epididymis. Synonym: glandulae suprarenales accessoriae. (05 Mar 2000) |
| aggregate glands | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |
| agminate glands | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |
| Albarran's glands | Minute submucosal glands or branching tubules in the subcervical region of the prostate gland, emptying for the most part into the posterior portion of the urethra. Synonym: Albarran y Dominguez' tubules. (05 Mar 2000) |
| apocrine glands | Large, branched, specialised sweat glands that empty into the upper portion of a hair follicle instead of directly onto the skin. (12 Dec 1998) |
| apocrine sweat glands | Sudoriferous glands that develop in association with hair follicles and undergo enlargement and secretory development at puberty; they secrete a viscous and odourless sweat that supports the growth of bacteria leading to an acrid odour; secretion is by an eccrine, not apocrine, mechanism. Synonym: axillary sweat glands. (05 Mar 2000) |
| areolar glands | A number of small mammary glands forming small rounded projections from the surface of the areola of the breast; they enlarge with pregnancy and during lactation secrete a substance presumed to resist chapping. Synonym: glandulae areolares, Montgomery's follicles, Montgomery's glands. (05 Mar 2000) |
| arytenoid glands | A large number of mixed glands in the mucous membrane of the larynx; they are called, according to their situation, anterior, middle, and posterior. Synonym: glandulae laryngeae, laryngeal glands. (05 Mar 2000) |
| axillary glands | Numerous nodes around the axillary veins which receive the lymphatic drainage from the upper limb, scapular region and pectoral region (including mammary gland); they drain into the subclavian trunk. Synonym: nodi lymphatici axillares, axillary glands. (05 Mar 2000) |