| interosseous groove of talus | The groove on the inferior surface of the talus, which with a corresponding groove on the calcaneus forms the sinus tarsi. Synonym: sulcus tali, interosseous groove, talar sulcus. (05 Mar 2000) |
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| interosseous margin | Edge of a bone to which a fibrous (interosseous) membrane is attached, by which the bone becomes attached to another bone. See: interosseous border of fibula, interosseous border of radius, interosseous border of tibia, interosseous border of ulna. Synonym: margo interosseus, interosseous crest, interosseous margin. (05 Mar 2000) |
| interosseous membrane of forearm | The dense membrane that connects the interosseous margins of the radius and ulna, forming the radioulnar syndesmosis, and with the bones separating the flexor and extensor compartments of the forearm. Synonym: membrana interossea antebrachii. (05 Mar 2000) |
| interosseous membrane of leg | The dense fibrous layer that connects the interosseous margins of the tibia and fibula, forming the upper portion of the tibiofibular syndesmosis and, with the bones and intermuscular septa, creating anterior and posterior comparments of the leg. Synonym: membrana interossea cruris, ligamentum tibiofibulare medium. (05 Mar 2000) |
| interosseous metacarpal ligaments | Fibrous bands connecting the bases of metacarpals two to five; they extend between the dorsal and palmar metacarpal ligaments. Synonym: ligamenta metacarpalia interossea. (05 Mar 2000) |
| interosseous metacarpal spaces | The spaces between the metacarpal bones in the hand. Synonym: spatia interossea metacarpi. (05 Mar 2000) |
| interosseous metatarsal ligaments | Fibrous bands that connect the bases of the metatarsals; they extend between the dorsal and plantar metatarsal ligaments. Synonym: ligamenta metatarsalia interossea. (05 Mar 2000) |
| interosseous metatarsal spaces | The spaces between the metatarsal bones in the foot. Synonym: spatia interossea metatarsi. (05 Mar 2000) |
| interosseous nerve of leg | <anatomy, nerve> A nerve given off from one of the muscular branches of the tibial nerve which passes down over the posterior surface of the interosseous membrane supplying it and the two bones of the leg. Synonym: nervus interosseus cruris, interosseous nerve of leg. (05 Mar 2000) |
| interosseous sacroiliac ligaments | Short obliquely directed fibrous bands that pass between the sacrum and ilium in the narrow cleft behind the auricular surfaces of these bones. Synonym: ligamenta sacroiliaca interossea. (05 Mar 2000) |
| interosseous talocalcaneal ligament | <anatomy> A strong fibrous band occupying the tarsal sinus. Synonym: ligamentum talocalcaneare interosseum. (05 Mar 2000) |
| interosseous tibiofibular ligament | <anatomy> The distal continuation of the interosseous membrane forming a strong ligament that unites the distal end of the tibia and fibula; it lies deep to the posterior tibiofibular ligament. Synonym: interosseous tibiofibular ligament. (05 Mar 2000) |
| abdominal external oblique muscle | <anatomy, muscle> Origin, fifth to twelfth ribs; insertion, anterior half of lateral lip of iliac crest, inguinal ligament, and anterior layer of the rectus sheath; action, diminishes capacity of abdomen, draws thorax downward; nerve supply, thoracoabdominal nerves. Synonym: musculus obliquus externus abdominis, abdominal external oblique muscle. (05 Mar 2000) |
| abdominal internal oblique muscle | <anatomy, muscle> Origin, iliac fascia deep to lateral part of inguinal ligament, anterior half of crest of ilium, and lumbar fascia; insertion, tenth to twelfth ribs and sheath of rectus; some of the fibres from inguinal ligament terminate in the conjoint tendon; action, diminishes capacity of abdomen, flexes lumbar vertebral column (bends thorax forward); nerve supply, lower thoracic. Synonym: musculus obliquus internus abdominis, abdominal internal oblique muscle. (05 Mar 2000) |
| abdominal muscle deficiency syndrome | <syndrome> Congenital absence (partial or complete) of abdominal muscles, in which the outline of the intestines is visible through the protruding abdominal wall; in males, genitourinary anomalies (urinary tract dilation and cryptorchidism) are also found; genetics unclear. (05 Mar 2000) |