| neural crest | A group of embryonic cells that separate from the neural plate during neurulation and migrate to give several different lineages of adult cells: the spinal and autonomic ganglia, the glial cells of the peripheral nervous system and nonneuronal cells, such as chromaffin cells, melanocytes and some haemopoietic cells. (18 Nov 1997) |
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| neural crest syndrome | <syndrome> Syndrome consisting of loss of pain sensibility, autonomic dysfunction, pupillary abnormalities, neurogenic anhidrosis, vasomotor instability, aplasia of dental enamel, meningeal thickening, hyperflexion, and a degree of albinism; may reflect developmental abnormalities of the neural crest. (05 Mar 2000) |
| 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) |
| 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) |
| 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) |
| 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) |
| terminal crest | A vertical crest on the interior wall of the right atrium that lies to the right of the sinus of the vena cava and separates this from the remainder of the right atrium. Synonym: tenia terminalis, terminal crest. (05 Mar 2000) |