| ischemic preconditioning | A technique in which tissue is rendered resistant to the deleterious effects of prolonged ischemia and reperfusion by prior exposure to brief, repeated periods of vascular occlusion. (am j physiol 1995 may;268(5 pt 2):h2063-7, abstract) (12 Dec 1998) |
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| ischemic preconditioning, myocardial | Exposure of myocardial tissue to brief, repeated periods of vascular occlusion in order to render the myocardium resistant to the deleterious effects of ischemia or reperfusion. The period of pre-exposure and the number of times the tissue is exposed to ischemia and reperfusion vary, the average being 3 to 5 minutes. (12 Dec 1998) |
| ischesis | Suppression of any discharge, especially of a normal one. Origin: G. Ischo, to hold back (05 Mar 2000) |
| ischia | Plural of ischium. (05 Mar 2000) |
| ischiadic | <anatomy> Ischial. <medicine> Ischiadic passion or disease, a rheumatic or neuralgic affection of some part about the hip joint. Synonym: sciatica. Origin: L. Ischiadicus, Gr, fr. The hip joint, hip or loin. Cf. Sciatic. Source: Websters Dictionary (01 Mar 1998) |
| ischiadic plexus | Formed by the fourth and fifth lumbar (lumbosacral trunk) and first, second, and third sacral nerves; it lies on the inner surface of the posterior wall of the pelvis usually embedded in the piriformis muscle; its nerves supply the lower limbs, its major product being the sciatic nerve. Synonym: plexus sacralis, ischiadic plexus, sciatic plexus. (05 Mar 2000) |
| ischiadic spine | A pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum; gives attachment to the sacrospinous ligament; the pudendal nerve passes dorsal to the ischial spine, which is palpable per vagina or rectum, and thus is used as a target for the needle-tip in administering a pudendal nerve block. Synonym: spina ischiadica, ischiadic spine, sciatic spine. (05 Mar 2000) |
| ischiadicus | Synonym: sciatic. Origin: L. (05 Mar 2000) |
| ischial | <anatomy> Of or pertaining to the ischium or hip; ischiac; ischiadic; ischiatic. <zoology> Ischial callosity, one of the patches of thickened hairless, and often bright-coloured skin, on the buttocks of many apes, as the drill. Source: Websters Dictionary (01 Mar 1998) |
| ischial bone | 1. <anatomy> The ventral and posterior of the three principal bones composing either half of the pelvis; seat bone; the huckle bone. 2. <zoology> One of the pleurae of insects. Origin: L, Gr. Source: Websters Dictionary (01 Mar 1998) |
| ischial bursa | <anatomy> The bursa between the gluteus maximus muscle and the tuberosity of the ischium. Synonym: bursa ischiadica musculi glutei maximi. (05 Mar 2000) |
| ischial ramus | The branch of the ischial bone, formerly called inferior branch of the ischium; the portion of the bone that passes forward from the ischial tuberosity to join the inferior ramus of the pubic bone, thus forming the ischiopubic ramus. Synonym: ramus ossis ischii. (05 Mar 2000) |
| ischial spine | A pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum; gives attachment to the sacrospinous ligament; the pudendal nerve passes dorsal to the ischial spine, which is palpable per vagina or rectum, and thus is used as a target for the needle-tip in administering a pudendal nerve block. Synonym: spina ischiadica, ischiadic spine, sciatic spine. (05 Mar 2000) |
| ischial tuberosity | The rough bony projection at the junction of the lower end of the body of the ischium and its ramus; this is a weight-bearing point in the sitting position; provides attachment for the sacrotuberous ligament and is the site of origin of the hamstring muscles. Synonym: tuber ischiadicum, tuber of ischium. (05 Mar 2000) |
| ischialgia | 1. Pain in the hip; specifically, the ischium. Synonym: ischiodynia. 2. Rarely used term for sciatica. Synonym: ischioneuralgia. Origin: G. Ischion, hip, + algos, pain (05 Mar 2000) |