| tympanic membrane perforation | An opening in the tympanic membrane usually caused by trauma. There are four general categories: compression injuries (the most common and usually the result of a blow to the ear); instrumentation injuries (the second most common, usually inadvertent, caused often by cotton swabs or bobby-pins); burn-slag injuries (frequently seen in industry, from hot metal from machines or welding); and blast injuries (usually seen during war or as a result of terrorist bombing). In the absence of infection, most traumatic tympanic membrane perforations heal spontaneously. Persistent perforation is usually a manifestation of tubotympanitis, an inflammation of the eustachian tube and tympanic cavity (middle ear). (12 Dec 1998) |
|---|---|
| umbo of tympanic membrane | The projection on the inner surface of the tympanic membrane at the end of the manubrium of the malleus; this corresponds to the most depressed point of the membrane, viewed laterally, that is commonly called the umbo. Synonym: umbo membranae tympani, umbo. (05 Mar 2000) |
| flaccid part of tympanic membrane | Triangular loose part of tympanic membrane between the malleolar folds. Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. (05 Mar 2000) |
| limbus of tympanic membrane | Margin of the tympanic membrane attaching to the tympanic sulcus. Synonym: limbus membranae tympani. (05 Mar 2000) |
| mucous | 1. Of, pertaining to, or resembling, mucus; slimy, ropy, or stringy, and lubricous; as, a mucous substance. 2. Secreting a slimy or mucigenous substance; as, the mucous membrane. Mucous membrane. <anatomy> A form of connective tissue in an early stage of development, found in the umbilical cord and in the embryo, and also in certain tumours called myxomata. Origin: L. Mucosus, fr. Mucus mucus. Source: Websters Dictionary (01 Mar 1998) |
| mucous cast | <nephrology> An elongated, ribbon-like mucous thread with poorly defined edges and pointed or split ends, often confused with a true urinary cast. Synonym: cylindroid, mucous cast, pseudocast, spurious cast. (05 Mar 2000) |
| mucous cell | A cell secreting mucus; e.g., a goblet cell. (05 Mar 2000) |
| mucous colitis | An affection of the mucous membrane of the colon characterised by colicky pain, constipation or diarrhoea (sometimes alternating), and passage of mucous or slimy pseudomembranous shreds and patches. Synonym: mucocolitis, myxomembranous colitis. (05 Mar 2000) |
| mucous connective tissue | A type of connective tissue little differentiated beyond the mesenchymal stage; its ground substance of glycoproteins is abundant and contains fine collagenous fibres and fibroblasts; in its most characteristic form, it appears in the umbilical cord as Wharton's jelly. Synonym: gelatinous tissue. (05 Mar 2000) |
| mucous cyst | A retention cyst resulting from obstruction in the duct of a mucous gland. Synonym: mucocele. (05 Mar 2000) |
| mucous diarrhoea | Diarrhoea with the presence of considerable mucus in the stools. (05 Mar 2000) |
| mucous gland | <anatomy> A type of merocrine gland that produces a thick (mucopolysaccharide rich) secretion as opposed to a serous gland). (18 Nov 1997) |
| mucous glands of auditory tube | Glands located principally near the pharyngeal end of the auditory tube. Synonym: glandulae tubariae, glands of auditory tube, glands of eustachian tube. (05 Mar 2000) |
| mucous membranes | <pathology> A mucous membrane or tunica mucosa. (18 Nov 1997) |
| mucous neck cell | One of the acidic mucin-secreting cell's in the neck of a gastric gland. (05 Mar 2000) |