| fibrous joint | A union of two bones by fibrous tissue such that there is no joint cavity and almost no motion possible; the types of fibrous joints are sutures, syndesmoses, and gomphoses. Synonym: articulatio fibrosa, immovable joint, junctura fibrosa, synarthrodia, synarthrodial joint. (05 Mar 2000) |
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| fibrous lamina | Alternative name for the nuclear lamina, the region lying just inside the inner nuclear membrane. (18 Nov 1997) |
| fibrous layer | The outer dense connective tissue layer of the periosteum. (05 Mar 2000) |
| fibrous mediastinitis | Scarring of mediastinal structures of unknown origin or due to infection. (05 Mar 2000) |
| fibrous membrane | The outer fibrous part of the capsule of a synovial joint, which may in places be thickened to form capsular ligaments. Synonym: membrana fibrosa, stratum fibrosum, fibrous membrane. (05 Mar 2000) |
| fibrous pericarditis | Scarring, usually with adhesions, of all or most of the pericardium. (05 Mar 2000) |
| fibrous pericardium | See: pericardium. Synonym: pericardium fibrosum. (05 Mar 2000) |
| fibrous plaque | Thickened area of arterial intima with accumulation of smooth muscle cells and fibrous tissue (collagen etc.) produced by the fat laden smooth muscle cells. Below the thickening may be free extracellular lipid and debris that, if much necrosis is also present, is referred to as an atheroma. (18 Nov 1997) |
| fibrous pneumonia | A process affecting pulmonary tissue and leading to deposition of collagen, either interstitially or in alveolar sacs. (05 Mar 2000) |
| fibrous polyp | A polyp consisting chiefly of cellular fibrous tissue, frequently with foci of fairly dense collagen or hyaline material (or both). (05 Mar 2000) |
| fibrous protein | Any insoluble protein, including the collagens, elastins, and keratins, involved in structural or fibrous tissues. (05 Mar 2000) |
| fibrous sheaths | See: fibrous tendon sheath, fibrous digital sheaths of hand, fibrous digital sheaths of foot. (05 Mar 2000) |
| fibrous skeleton of heart | A complex framework of dense collagen forming four fibrous rings (annuli fibrosi), which surround the ostia of the valves, a right and left fibrous trigone, formed by connecting the rings, and the membranous portions of the interatrial and interventricular septa; it is found in association with the base of the ventricles, i.e., at the level of the coronary sulcus; its functions include: 1) contributing reinforcement of the valvular ostia while providing attachment for the leaflets and cusps of the valves; 2) providing origin and insertion for the myocardium; and 3) serving as a sort of electrical "insulator," separating the electrically conducted impulses of the atria and ventricles and providing passage for the common atrioventricular bundle of conductive tissue through the right fibrous trigone and membranous interventricular septum. Synonym: cardiac fibrous skeleton, cardiac skeleton, skeleton of heart. (05 Mar 2000) |
| fibrous tissue | Although most connective tissue has fibrillar elements, the term usually refers to tissue laid down at a wound site well vascularised at first (granulation tissue) but later avascular and dominated by collagen rich extracellular matrix, forming a scar. Excessive contraction and hyperplasia leads to formation of a keloid. (18 Nov 1997) |
| fibrous trigones of heart | See: right fibrous trigone, left fibrous trigone. (05 Mar 2000) |