| closing contraction | Contraction produced at the time of closing of the circuit when using direct current to stimulate the muscle. (05 Mar 2000) |
|---|---|
| closing membranes | Thin sheets, composed of ectoderm externally and endoderm internally, which separate the pharyngeal pouches from the overlying branchial clefts in the early embryo. Synonym: pharyngeal membranes. (05 Mar 2000) |
| closing volume | The lung volume at which the dependent lung zones cease to ventilate presumably as a result of airway closure. (12 Dec 1998) |
| vaginal plug | A plug formed by the coagulation of semen; found in the vagina after copulation in certain animals, such as the baboon, rat, and squirrel. (05 Mar 2000) |
| meconium plug | <radiology> Functional colonic inertia, Diagnosis/Treatment: Gastrografin enema (Differential diagnosis: Hirschsprung disease, meconium ileus), F/U with another enema for confirmation, associated with maternal diabetes (12 Dec 1998) |
| mucous plug | A mass of mucus and cells filling the cervical canal between periods or during pregnancy; a mass of mucous occluding a main or lobar bronchus. (05 Mar 2000) |
| plug | 1. Any piece of wood, metal, or other substance used to stop or fill a hole; a stopple. 2. A flat oblong cake of pressed tobacco. 3. A high, tapering silk hat. 4. A worthless horse. 5. A block of wood let into a wall, to afford a hold for nails. Fire plug, a street hydrant to which hose may be attached. Hawse plug, a tapering valve, which turns in a case like the plug of a faucet. Origin: Akin to D. Plug, G. Pflock, Dan. Plok, plug, Sw. Plugg; cf. W. Ploc. Source: Websters Dictionary (01 Mar 1998) |
| epithelial plug | A mass of epithelial cells temporarily occluding an embryonic opening; the term is most commonly used with reference to the external nares. (05 Mar 2000) |
| laminated epithelial plug | An accretion of epithelia in the external auditory canal. Synonym: laminated epithelial plug. (05 Mar 2000) |