fibrous astrocyte |
Stellate astrocytic cell with long processes found mainly in the white matter of the brain and spinal cord and characterised by having bundles of glial filaments in its cytoplasm; origin of most astrocytomas. (05 Mar 2000) |
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fibrous bacterial viruses |
Deoxyribonucleoproteins that "infect" and replicate in Gram-negative bacteria having sex pili and that, unlike bacteriophage, are released from infected bacteria without damage to the cell; they seem to be of two kinds, one of which has a specificity for F pili and the other for I pili. Synonym: fibrous bacterial viruses. (05 Mar 2000) |
fibrous capsule |
Any fibrous envelope of a part. The fibrous capsule of an organ. Synonym: stratum fibrosum, tunica fibrosa, capsula fibrosa. (05 Mar 2000) |
fibrous capsule of kidney |
A fibrous membrane ensheathing the kidney. Synonym: capsula fibrosa renis, tunica fibrosa renis. (05 Mar 2000) |
fibrous capsule of liver |
A layer of connective tissue ensheathing the hepatic artery, portal vein, and bile ducts as these ramify within the liver. Synonym: capsula fibrosa perivascularis, perivascular fibrous capsule. Connective tissue capsule surrounding the outer surface of the liver, but continuous with septae of some animals which divide parenchyme into lobule, and with the perivascular fibrous capsule at the porta hepatis. Synonym: tunica fibrosa hepatis, Glisson's capsule. (05 Mar 2000) |
fibrous capsule of parotid gland |
The part of the investing cervical fascia that ensheaths the parotid gland and is fixed above to the zygomatic arch. Synonym: fascia parotidea, fibrous capsule of parotid gland, parotid sheath. (05 Mar 2000) |
fibrous capsule of spleen |
The fibrous capsule of the spleen, containing collagen, elastic fibres, and smooth muscle. Synonym: tunica fibrosa splenis, tunica fibrosa lienis, capsula lienis, tunica propria lienis. (05 Mar 2000) |
fibrous capsule of thyroid gland |
The fibrous sheath of the thyroid gland. Synonym: capsula fibrosa glandulae thyroideae. (05 Mar 2000) |
fibrous cortical defect |
A common 1 to 3 cm defect in the cortex of a bone, most commonly the lower femoral shaft of a child, filled with fibrous tissue. Nonosteogenic or nonossifying fibroma by convention refers to lesions greater than 3 cm in diameter. See: nonossifying fibroma. Synonym: nonosteogenic fibroma. (05 Mar 2000) |
fibrous degeneration |
Not a degeneration per se, but rather a reparative process; cells and foci of tissue previously affected with degenerative processes, and necrosis, are replaced by cellular fibrous tissue. (05 Mar 2000) |
fibrous digital sheaths of foot |
Fibrous sheaths of the toes, the tubular fibrous layer enclosing the synovial sheath and the tendons of the long and short flexors of the toes and the flexor hallucis longus in the digits; they are composed of annular and cruciform parts. Synonym: vaginae fibrosae digitorum pedis. (05 Mar 2000) |
fibrous digital sheaths of hand |
Fibrous sheaths of the digits of the hand, the tubular fibrous layers that enclose the synovial sheaths and the superficial and deep flexor tendons and the tendon of the flexor pollicis longus in their passage along their respective digits; they are composed of annular and cruciform parts. Synonym: vaginae fibrosae digitorum manus. (05 Mar 2000) |
fibrous dysplasia |
A condition of cystic bone growth that results from abnormal bone development. May occur with bone lesions, skin pigmentation and endocrine abnormalities. See: McCune-Albright syndrome. Origin: Gr. Plassein = to form (27 Sep 1997) |
fibrous dysplasia of bone |
A disease of bone marked by thinning of the cortex and replacement of bone marrow by gritty fibrous tissue containing bony spicules, producing pain, disability, and gradually increasing deformity. Only one bone may be involved (fibrous dysplasia, monostotic) or several (fibrous dysplasia, polyostotic). (12 Dec 1998) |
fibrous dysplasia of jaws |
<radiology> Hereditary form of polyostotic fibrous dysplasia, involves mandible (12 Dec 1998) |