| posterior inferior iliac spine | Spine at the inferior end of the posterior border of the ilium between the posterior superior iliac spine and the greater sciatic notch; it forms the upper margin of the latter. Synonym: spina iliaca posterior inferior. (05 Mar 2000) |
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| posterior superior iliac spine | The posterior extremity of the iliac crest, the uppermost point of attachment of the sacrotuberous and posterior sacroiliac ligaments; a readily apparent dimple occurs in the skin overlying the posterior superior iliac spine which is clinically useful as an indication of the level of the S-2 vertebra, the level of the inferior limit of the subarachnoid space. Synonym: spina iliaca posterior superior. (05 Mar 2000) |
| promontory common iliac lymph nodes | Nodes of the common iliac group located at the promontory of the sacrum. Synonym: nodi lymphatici promontorii, nodi lymphatici iliaci communes promontorii. (05 Mar 2000) |
| subtendinous iliac bursa | <anatomy> The bursa at the attachment of the iliopsoas muscle into the lesser trochanter. Synonym: bursa subtendinea iliaca, iliac bursa. (05 Mar 2000) |
| iliac | 1. <anatomy> Pertaining to, or in the region of, the ilium, or dorsal bone of the pelvis; as, the iliac artery. 2. Iliac crest, the upper margin of the ilium. 3. Iliac region, a region of the abdomen, on either side of the hypogastric regions, and below the lumbar regions. Alternative forms: ileac. Origin: Cf. F. Iliaque. (11 Mar 1998) |
| iliac aneurysm | An aneurysm of the common, internal, or external iliac arteries. (12 Dec 1998) |
| iliac arteries | Arteries related to the ilium. See: common iliac artery, deep circumflex iliac artery, external iliac artery, internal iliac artery, superficial circumflex iliac artery. (05 Mar 2000) |
| iliac artery | <anatomy, artery> Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs. (12 Dec 1998) |
| iliac bone | <anatomy> The upper and largest, part of the bony pelvic girdle (iliac wing). The ilium articulates on its inner aspect with the sacrum (sacroiliac joint). (27 Sep 1997) |
| iliac branch of iliolumbar artery | <anatomy, artery> Terminal branch of iliolumbar artery (with lumbar branch) distributed to iliac fossa to supply iliac muscle, ilium, and portions of muscles having attachment to the iliac crest. Synonym: ramus iliacus arteriae iliolumbalis. (05 Mar 2000) |
| iliac bursa | <anatomy> The bursa at the attachment of the iliopsoas muscle into the lesser trochanter. Synonym: bursa subtendinea iliaca, iliac bursa. (05 Mar 2000) |
| iliac colon | That portion of the descending colon which occupies the left iliac fossa, between the crest of the left ilium and the pelvic brim. Irritable colon, tendency to colonic hyperperistalsis, sometimes with colicky pains and diarrhoea. Lead-pipe colon, the scarred rigid colon of advanced ulcerative colitis. Mucosa of colon, the lining coat of the colon. Synonym: tunica mucosa coli. (05 Mar 2000) |
| iliac crest | <anatomy> The hip bone in which a large quantity of bone marrow is concentrated. (16 Dec 1997) |
| iliac fascia | The fascia covering the iliacus and psoas muscles, continuous with transversalis fascia anterolaterally and with femoral sheath inferiorly. Synonym: fascia iliaca. (05 Mar 2000) |
| iliac fossa | The smooth inner surface of the ilium above the arcuate line, giving attachment to the iliacus muscle. Synonym: fossa iliaca. (05 Mar 2000) |