| H reflex | <clinical sign, neurology> A monosynaptic reflex consistently obtained in normal adults only by stimulating the tibial nerve, generally in the popliteal fossa, while recording from the gastrocnemius-soleus muscle group. It is similar to the Achilles reflex, except the neuromuscular spindles are bypassed; widely used in the EMG laboratory to diagnose S1 radiculopathies and polyneuropathies. (05 Mar 2000) |
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| shot-silk reflex | The appearance of numerous wavelike, glistening reflexes, like the shimmer of silk, observed sometimes in the retina of a young person. Synonym: shot-silk phenomenon, shot-silk reflex. (05 Mar 2000) |
| sinus reflex | See: carotid sinus syndrome. (05 Mar 2000) |
| hypochondrial reflex | <neurology> A quick inspiration induced by sharp pressure beneath the costal margin. (05 Mar 2000) |
| hypogastric reflex | Contraction of the abdominal muscles upon stroking the inner aspect of the thigh; in association with the cremasteric reflex. Synonym: hypogastric reflex. (05 Mar 2000) |
| skin-pupillary reflex | Dilation of the pupil following scratching of the skin of the neck. Synonym: ciliospinal reflex, cutaneous pupil reflex, cutaneous-pupillary reflex, skin-pupillary reflex. (05 Mar 2000) |
| snout reflex | Pouting or pursing of the lips induced by light tapping of closed lips near the midline; seen in defective pyramidal innervation of facial musculature. (05 Mar 2000) |
| sole reflex | The response to tactile stimulation of the ball of the foot, normally plantar flexion of the toes; the pathologic response is Babinski's sign. Synonym: sole reflex. (05 Mar 2000) |
| sole tap reflex | Plantar flexion of the foot and toes elicited by tapping the sole near its outer edge; has the same significance as the Rossolimo toe flexion reflex Also called Guillain-Barre, Weingrow's, or sole tap reflex. Synonym: Guillain-Barre reflex, sole tap reflex, Weingrow's reflex. (05 Mar 2000) |
| spinal reflex | A reflex arc involving the spinal cord. See: reflex arc. (05 Mar 2000) |
| spino-adductor reflex | Contraction of the adductors of the thigh upon tapping the spinal column. Synonym: McCarthy's reflexes. (05 Mar 2000) |
| nasal reflex | Sneezing caused by irritation of the nasal mucous membrane. (05 Mar 2000) |
| nasomental reflex | Contraction of the mentalis muscle following a tap on the side of the nose. (05 Mar 2000) |
| near reflex | Pupillary constriction with a near vision effort, with ocular convergence, or with accommodation; an associated reaction, not a true reflex. (05 Mar 2000) |
| Starling's reflex | Tapping the volar surfaces of the fingers causes flexion of the fingers; analogous to Rossolimo's reflex, for the toes. (05 Mar 2000) |