principal cells

principal cells
1. chief c's (def. 3). 2. the fundamental cells of an organ, which usually have a specific function. 3. light-staining cells of the renal collecting tubules that transport water in response to antidiuretic hormone and sodium in response to aldosterone.

Medical dictionary. 2011.

Look at other dictionaries:

  • parafollicular cells — ovoid cells with an irregular nucleus and many brown or black cytoplasmic granules, located in the follicular epithelium and interfollicular spaces along with the principal cells of the thyroid follicles, in the follicular epithelium and… …   Medical dictionary

  • supporting cells — cells that serve to provide support and protection and perhaps contribute to the nutrition of principal or other cells of certain organs; included are cells in the membranous labyrinth of the internal ear, olfactory epithelium, taste buds, and… …   Medical dictionary

  • chief cells — 1. epithelial cells, either columnar or cuboidal, that line the lower portions of the gastric glands and secrete pepsin; called also peptic c s. 2. pinealocytes. 3. the most abundant cells of the parathyroid glands, being polygonal epithelial… …   Medical dictionary

  • Q-Cells — Saltar a navegación, búsqueda Q Cells Tipo Sociedad Anónima Fundación 1999 …   Wikipedia Español

  • Collecting duct system — Scheme of renal tubule and its vascular supply. Latin tubulus renalis colligens Gray s …   Wikipedia

  • Dorsal cochlear nucleus — Brain: Dorsal cochlear nucleus Dorsal cochlear nucleus is #4, at upper left …   Wikipedia

  • body — 1. The head, neck, trunk, and extremities. The human b., consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the …   Medical dictionary

  • immune system — Anat. a diffuse, complex network of interacting cells, cell products, and cell forming tissues that protects the body from pathogens and other foreign substances, destroys infected and malignant cells, and removes cellular debris: the system… …   Universalium

  • connective tissue — Anat. a tissue, usually of mesoblastic origin, that connects, supports, or surrounds other tissues, organs, etc. [1880 85] * * * Tissue in the body that maintains the form of the body and its organs and provides cohesion and internal support,… …   Universalium

  • Cochlear nuclei — Brain: Cochlear nuclei Dissection of brain stem. Dorsal view. ( Cochlear nucleus is labeled on left, fifth from the bottom.) …   Wikipedia