| 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) |
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| 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) |
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| sole | 1. The bottom of the foot; hence, also, rarely, the foot itself. "The dove found no rest for the sole of her foot." (Gen. Viii. 9) "Hast wandered through the world now long a day, yet ceasest not thy weary soles to lead." (Spenser) 2. The bottom of a shoe or boot, or the piece of leather which constitutes the bottom. "The "caliga" was a military shoe, with a very thick sole, tied above the instep." (Arbuthnot) 3. The bottom or lower part of anything, or that on which anything rests in standing. Specifially: The seat or bottom of a mine; applied to horizontal veins or lodes. Sole leather, thick, strong, used for making the soles of boots and shoes, and for other purposes. Origin: AS. Sole, fr. L. Soolea (or rather an assumed L. Sola), akin to solumround, soil, sole of the foot. Cf. Exile, Saloon, Soil earth, Sole the fish. <zoology> Any one of several species of flatfishes of the genus Solea and allied genera of the family Soleidae, especially the common European species (Solea vulgaris), which is a valuable food fish. Any one of several American flounders somewhat resembling the true sole in form or quality, as the California sole (Lepidopsetta bilineata), the long-finned sole (Glyptocephalus zachirus), and other species. <zoology> Lemon, or French, sole, the megrim. Origin: F. Sole, L. Solea; so named from its flat shape. See Sole of the foot. Source: Websters Dictionary (01 Mar 1998) |
| sole nuclei | An accumulation of skeletal muscle fibre nuclei at the myoneural junction. (05 Mar 2000) |
| sole of foot | The inferior aspect or bottom of the foot, much of which is in contact with the ground when standing; it is covered with hairless, usually nonpigmented skin that is especially thickened and provided with epidermal ridges over the weight-bearing areas. Synonym: planta pedis, regio plantaris. (05 Mar 2000) |
| sole-plate ending | The specialised postsynaptic region of a muscle cell. The motor endplate is immediately across the synaptic cleft from the presynaptic axon terminal. Among its anatomical specializations are junctional folds which harbor a high density of cholinergic receptors. See: neuromuscular junction (12 Dec 1998) |
| quadrate muscle of sole | <anatomy, muscle> Origin, by two heads from the lateral and medial borders of the inferior surface of the calcaneus; insertion, tendons of flexor digitorum longus; action, assists long flexor; nerve supply, lateral plantar. Synonym: musculus flexor accessorius, musculus quadratus plantae, accessory flexor muscle of foot, caro quadrata sylvii, musculus pronator pedis, plantar quadrate muscle, quadrate muscle of sole. (05 Mar 2000) |
| 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) |
| acute reflex bone atrophy | Atrophy of bones, commonly of the carpal or tarsal bones, following a slight injury such as a sprain. See: causalgia, reflex sympathetic dystrophy. Synonym: acute reflex bone atrophy, posttraumatic osteoporosis, Sudeck's syndrome. Origin: L. English sweat (05 Mar 2000) |
| adductor reflex | Contraction of the adductors of the thigh caused by tapping the tendon of the adductor magnus muscle while the thigh is abducted. (05 Mar 2000) |