| sea-bar | <zoology> A tern. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| sternal bar | One of the transverse units of the developing sternum formed by the union of paired primordia. (05 Mar 2000) |
| occlusal rest bar | A minor connector used to attach an occlusal rest to a major part of a removable partial denture. (05 Mar 2000) |
| terminal bar | Obsolete name for zonula occludens (tight junction). (18 Nov 1997) |
| labial bar | A major connector located labial to the dental arch joining two or more bilateral parts of a mandibular removable partial denture. (05 Mar 2000) |
| lingual bar | A major connector located lingual to the dental arch joining two or more bilateral parts of a mandibular removable partial denture. (05 Mar 2000) |
| Louis-Bar | Denise, mid-20th century French physician. See: Louis-Bar syndrome. (05 Mar 2000) |
| Louis-Bar syndrome | ataxia telangiectasia |
| abdominocardiac reflex | Mechanical stimulation (usually distention) of abdominal viscera causing changes (usually a slowing) in the heart rate or the occurrence of extrasystoles. (05 Mar 2000) |
| Abrams' heart reflex | A contraction of the myocardium when the skin of the precordial region is irritated. (05 Mar 2000) |
| accommodation reflex | Increased convexity of the lens, due to contraction of the ciliary muscle and relaxation of the suspensory ligament, to maintain a distinct retinal image. (05 Mar 2000) |
| Achilles reflex | A contraction of the calf muscles when the tendo calcaneus is sharply struck. Synonym: ankle jerk, ankle reflex, tendo Achillis reflex, triceps surae reflex. (05 Mar 2000) |
| acousticopalpebral reflex | A form of the wink reflex in which there is a contraction, sometimes very slight, of the orbicularis palpebrarum muscle when a sudden noise is made close to the ear; it is absent in labyrinthine disease with total deafness. Synonym: acousticopalpebral reflex, auropalpebral reflex, cochleo-orbicular reflex, startle reflex. (05 Mar 2000) |
| acquired reflex | A reflex that is gradually developed by training and association through the frequent repetition of a definite stimulus. See: conditioning. Synonym: acquired reflex, behaviour reflex, trained reflex. (05 Mar 2000) |
| acromial reflex | Contraction of the biceps muscle caused by a tap on the acromion or the coracoid process. (05 Mar 2000) |