| labyrinthine vertigo | <neurology> A name applied to recurrent vertigo accompanied by ringing in the ears (tinnitus) and deafness. A dysfunction of the semi-circular canals (endolymphatic sac) in the inner ear. Symptoms include dizziness, hearing loss (one-sided), vertigo, nausea, vomiting and abnormal eye movements. Treatment includes anticholinergics, antihistamines and other medications which relieve vertigo. Diuretic medications have been used to lower pressure in the endolymphatic sac. (27 Sep 1997) |
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| labyrinthine wall of middle ear | A bony layer separating the middle from the internal ear or labyrinth; it contains the fenestra vestibuli and the fenestra cochleae. Synonym: paries labyrinthicus cavi tympani, labyrinthine wall of middle ear, medial wall of middle ear. (05 Mar 2000) |
| abdominal reflexes | Contraction of the muscles of the abdominal wall upon stimulation of the skin (superficial a. Reflex's) or tapping neighboring bony structures (deep a. Reflex's). Synonym: supraumbilical reflex. (05 Mar 2000) |
| allied reflexes | Reflex's which, acting toward a common purpose, can traverse the final common path together. (05 Mar 2000) |
| antagonistic reflexes | Reflex's which do not act toward a common purpose, and cannot together traverse the final common path. (05 Mar 2000) |
| attitudinal reflexes | Reflex's in which utricular receptors in the vestibular apparatus sense changes in the head's position in space in terms of linear acceleration and the earth's gravitational field while receptors in the neck muscles sense changes in the position of the head relative to the trunk; input from these receptors reflexly controls the tone of the limb muscles to maintain or regain the desired posture. Synonym: attitudinal reflexes. (05 Mar 2000) |
| McCarthy's reflexes | Contraction of the adductors of the thigh upon tapping the spinal column. Synonym: McCarthy's reflexes. (05 Mar 2000) |
| cephalic reflexes | Reflex's associated with the cranial nerves. (05 Mar 2000) |
| proprioceptive reflexes | <physiology> Any reflex brought about by stimulation of proprioceptors. See: proprioceptor. (05 Mar 2000) |
| skin-muscle reflexes | Superficial or cutaneous reflex's, such as the superficial abdominal reflex's. Synonym: skin reflexes. (05 Mar 2000) |
| skin reflexes | Superficial or cutaneous reflex's, such as the superficial abdominal reflex's. Synonym: skin reflexes. (05 Mar 2000) |
| neck reflexes | Changes in position of the head cause alterations in tone of the neck muscles through stimulation of proprioceptors in the labyrinth which bring the head into its correct position in space; stimulation of proprioceptors in the neck muscles causes in turn reflex movements of the limbs which bring the animal into the normal position in relation to the head. (05 Mar 2000) |
| static reflexes | Responses that control the position of the trunk and extremities. See: righting reflexes. Synonym: static reflexes. (05 Mar 2000) |
| statotonic reflexes | Reflex's in which utricular receptors in the vestibular apparatus sense changes in the head's position in space in terms of linear acceleration and the earth's gravitational field while receptors in the neck muscles sense changes in the position of the head relative to the trunk; input from these receptors reflexly controls the tone of the limb muscles to maintain or regain the desired posture. Synonym: attitudinal reflexes. (05 Mar 2000) |
| supporting reflexes | Described by Magnus, who distinguished two types: (05 Mar 2000) |