| anterior inferior iliac spine | Spine on the anterior border of the ilium between the anterior superior iliac spine and the acetabulum; site of origin for the direct head of the rectus femoris muscle. Synonym: spina iliaca anterior inferior. (05 Mar 2000) |
|---|---|
| anterior superior iliac spine | The anterior extremity of the iliac crest, which provides attachment for the inguinal ligament and the sartorius muscle. Synonym: spina iliaca anterior superior. (05 Mar 2000) |
| common iliac lymph nodes | Nodes located in association with the common iliac vein; they are subdivided into five groups: intermediate (anterior) common iliac lymph nodes, between the common iliac artery and vein; lateral common iliac lymph nodes lateral to the vein; medial common iliac lymph nodes, medial to the vein; promontory common iliac lymph nodes at the sacral promontory; and subaortic common iliac lymph nodes, at the bifurcation of the aorta; they all receive afferent vessels from the external and internal iliac nodes and send efferent vessels to the lumbar nodes. Synonym: nodi lymphatici iliaci communes. (05 Mar 2000) |
| common iliac vein | <anatomy, vein> Formed by the union of the external and internal iliac veins at the brim of the pelvis and passes upward behind the internal iliac artery to the right side of the body of the fifth lumbar vertebra where it unites with its fellow of the opposite side to form the inferior vena cava; the left common iliac vein is submitted to a pulsating compression by the right common iliac artery against the vertebral column which may result in partial obstruction of the vein. Synonym: vena iliaca communis. (05 Mar 2000) |
| 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) |
| 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 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 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) |