| UR | unconditioned reflex; upper respiratory; uridine; urinal; urology; utilization review |
|---|---|
| VOR | vestibulo-ocular reflex; volume of regret |
| VRR | ventral root reflex |
| VUR | vesicoureteral reflex |
| visual orbicularis reflex | Contraction of the orbicularis oculi muscle caused by a sudden visual stimulus. See: wink reflex. (05 Mar 2000) |
|---|---|
| renal reflex | Anuria caused by injury to a remote part of the body or by disease or injury to one kidney or ureter. (05 Mar 2000) |
| pectoral reflex | Contraction of the pectoralis major muscle elicited by tapping the seventh rib between the anterior and the medial axillary lines while the arm is abducted; contraction of the deltoid and biceps may also occur. Synonym: costopectoral reflex. (05 Mar 2000) |
| mediopubic reflex | Contraction of the adductors of the thigh upon tapping the pubic bone near the symphysis. (05 Mar 2000) |
| gluteal reflex | Contraction of the gluteal muscles following irritation of the skin of the buttocks. (05 Mar 2000) |
| vomiting reflex | Vomiting (contraction of the abdominal muscles with relaxation of the cardiac sphincter of the stomach and of the muscles of the throat) elicited by a variety of stimuli, especially one applied to the region of the fauces. Synonym: pharyngeal reflex. (05 Mar 2000) |
| cephalopalpebral reflex | Contraction of the orbicularis muscle elicited by tapping the vertex of the skull. (05 Mar 2000) |
| Mendel-Bechterew reflex | Percussion of the dorsum of the foot causes flexion of the toes; present in a pyramidal lesion. Synonym: dorsum pedis reflex, Mendel-Bechterew reflex. (05 Mar 2000) |
| Mendel's instep reflex | The foot being firmly supported on its inner side, a sharp tap on the dorsal tendons causes extension of the second to the fifth toes. Synonym: back of foot reflex, dorsum of foot reflex. (05 Mar 2000) |
| Chaddock reflex | <clinical sign> When the external malleolar skin area is irritated, extension of the great toe occurs in cases of organic disease of the corticospinal reflex paths. Synonym: Chaddock reflex, external malleolar sign. (05 Mar 2000) |
| chain reflex | A series of reflexs, each serving as a stimulus for the next. (05 Mar 2000) |
| Perez reflex | Running a finger down the spine of an infant held supported in a prone position will normally cause the whole body to become extended. (05 Mar 2000) |
| Gordon reflex | Dorsal flexion of the great toe produced by firm lateral pressure on the calf muscles. Synonym: paradoxical flexor reflex. (05 Mar 2000) |
| pericardial reflex | A vagal reflex seen during operations involving pericardial manipulation; characterised by signs of vagal stimulation (bradycardia and arterial hypotension). (05 Mar 2000) |
| grasping reflex | An involuntary flexion of the fingers to tactile or tendon stimulation on the palm of the hand, producing an uncontrollable grasp; usually associated with frontal lobe lesions. Compare: darwinian reflex. Synonym: forced grasping reflex, grasp reflex. (05 Mar 2000) |