| IMA | Industrial Medical Association; inferior mesenteric artery; Interchurch Medical Assistance; internal... |
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| IMG | inferior mesenteric ganglion; internal medicine group [practice]; international medical graduate |
| IMI | immunologically measurable insulin; impending myocardial infarction; Imperial Mycological Institute ... |
| IMV | inferior mesenteric vein; intermittent mandatory ventilation; intermittent mechanical ventilation; i... |
| INA | infectious nucleic acid; inferior nasal artery; International Neurological Association |
| supinator crest | Crest of supinator muscle, the proximal part of the interosseous border of the ulna from which a portion of the supinator muscle takes origin. Synonym: crista musculi supinatoris. (05 Mar 2000) |
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| supramastoid crest | The ridge that forms the posterior root of the zygomatic process of the temporal bone. Synonym: crista supramastoidea. (05 Mar 2000) |
| supraventricular crest | The internal muscular ridge that separates the conus arteriosus from the remaining part of the cavity of the right ventricle of the heart. Synonym: crista supraventricularis. (05 Mar 2000) |
| deltoid crest | A rough elevation about the middle of the lateral side of the shaft of the humerus, giving attachment to the deltoid muscle. Synonym: tuberositas deltoidea, deltoid crest, deltoid eminence, deltoid impression. (05 Mar 2000) |
| dental crest | <dentistry> The maxillary ridge on the aleveolar processes of the maxillary bones in the foetus. Synonym: crista dentalis. (05 Mar 2000) |
| iliac crest | <anatomy> The hip bone in which a large quantity of bone marrow is concentrated. (16 Dec 1997) |
| incisor crest | The front part of the nasal crest of the palatine process of the maxilla. (05 Mar 2000) |
| infratemporal crest | A rough ridge marking the angle of union of the temporal and infratemporal surfaces of the greater wing of the sphenoid bone. Synonym: crista infratemporalis, pterygoid ridge of sphenoid bone. (05 Mar 2000) |
| inguinal crest | An elevation in the body wall of the embryo at the internal opening of the inguinal canal; part of the gubernaculum testis develops within it. (05 Mar 2000) |
| intermediate line of iliac crest | The line on the crest of the ilium between the outer and inner lips, for origin of internal oblique muscle. Synonym: linea intermedia cristae iliacae. (05 Mar 2000) |
| internal lip of iliac crest | The roughened inner margin of the crest that gives attachment to parts of the transversus abdominis, quadratus lumborum, and erector spinae muscles. Synonym: labium internum cristae iliacae. (05 Mar 2000) |
| internal occipital crest | A ridge running from the internal occipital protuberance to the posterior margin of the foramen magnum, giving attachment to the falx cerebelli. Synonym: crista occipitalis interna. (05 Mar 2000) |
| interosseous crest | 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) |
| intertrochanteric crest | The rounded ridge that connects the greater and lesser trochanters of the femur posteriorly and marks the junction of the neck and shaft of the bone. Synonym: crista intertrochanterica, trochanteric crest. (05 Mar 2000) |
| obturator crest | A ridge that extends from the pubic tubercle to the acetabular notch, giving attachment to the pubofemoral ligament of the hip joint. Synonym: crista obturatoria. (05 Mar 2000) |