one and one-half syndrome
| suspensory ligament of thyroid gland | One of several fibrous bands which pass from the sheath of the thyroid gland to the thyroid and cricoid cartilages. (05 Mar 2000) |
|---|---|
| deviation to the right | In a differential count of white blood cells in the peripheral blood, the absence of young and immature forms. Synonym: deviation to the right. See: maturation index. (05 Mar 2000) |
| discordant thyroid nodule | <radiology> Hot on Tc-99m pertechnetate, cold on I-123 or I-131, indicates trapping, but no organification, same work-up as cold nodule (12 Dec 1998) |
| double outlet right ventricle | <cardiology, embryology> Incomplete transposition of the great vessels in which both the aorta and the pulmonary artery arise from the right ventricle, often associated with a subaortic ventricular septal defect. (12 Dec 1998) |
| immunoglobulins, thyroid-stimulating | Autoantibodies that bind to the thyroid-stimulating hormone (tsh) receptor (receptors, thyrotropin) on thyroid epithelial cells. The autoantibodies mimic tsh causing an unregulated production of thyroid hormones characteristic of graves' disease. (12 Dec 1998) |
| inferior thyroid artery | <anatomy, artery> Origin, terminal branch of thyrocervical trunk (with ascending cervical artery); branches, inferior laryngeal, and muscular, oesophageal, and tracheal. Synonym: arteria thyroidea inferior. (05 Mar 2000) |
| inferior thyroid notch | A shallow notch in the middle of the lower border of the thyroid cartilage. Synonym: incisura thyroidea inferior. (05 Mar 2000) |
| inferior thyroid plexus | An autonomic plexus on the artery of this name, derived from the subclavian plexus. Synonym: plexus thyroideus inferior. (05 Mar 2000) |
| inferior thyroid tubercle | A slight lateral projection from the lower margin of the lamina of the thyroid cartilage on either side, at the inferior end of the oblique line. Synonym: tuberculum thyroideum inferius. (05 Mar 2000) |
| inferior thyroid vein | <anatomy, vein> Unpaired vein formed by veins from the isthmus and lateral lobe of the thyroid gland and from the plexus thyroideus impar; it terminates in the left brachiocephalic vein. Synonym: vena thyroidea inferior, vena thyroidea ima. (05 Mar 2000) |
| infrahyoid branch of superior thyroid artery | <anatomy, artery> Small branch from the initial part of the superior thyroid artery coursing along the hyoid bone deep to the thyrohyoid muscle to anastomose with its contralateral partner. Synonym: ramus infrahyoideus arteriae thyroidea superioris. (05 Mar 2000) |
| infralobar part of posterior branch of right pulmonary vein | <anatomy, vein> The vein draining the posterior segment of the right lung that emerges inferior to the superior lobe; tributary to the posterior branch of the right superior pulmonary vein. Synonym: pars infralobaris rami posterioris venae pulmonalis dextrae. (05 Mar 2000) |
| intralobar part of the right superior pulmonary vein | <anatomy, vein> The vein draining the apical and posterior segments of the right lung; tributary to the posterior branch of the right superior pulmonary vein. Synonym: pars intralobaris venae pulmonalis dextrae superioris. (05 Mar 2000) |
| isthmus of thyroid | The central part of the thyroid gland joining the two lateral lobes. Synonym: isthmus glandulae thyroideae. (05 Mar 2000) |
| oesophageal branches of the inferior thyroid artery | <anatomy, artery> Distribution: upper one-quarter of oesophagus; anastomosis: oesophageal branches of thoracic aorta. Synonym: rami oesophageales arteriae thyroideae inferioris. (05 Mar 2000) |