| thoracic aortic aneurysm | <radiology> Normal size: 4-5 cm, most aneurysms rupture when more than 10 cm, mean age: 65 years; M:F = 3:1 associated with: hypertension, coronary artery disease, abdominal aortic aneurysm symptoms: substernal, back, shoulder pain (25%), superior vena cava syndrome, dysphagia, stridor, dyspnea, hoarseness see: aortic aneurysm (12 Dec 1998) |
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| thoracic aortic plexus | An autonomic plexus surrounding the thoracic aorta and passing with it through the aortic opening in the diaphragm, to become continuous with the abdominal aortic plexus. Synonym: plexus aorticus thoracicus. (05 Mar 2000) |
| familial aortic ectasia | <cardiology, syndrome> The concurrence as an autosomal dominant trait of bicuspid aortic valve often with premature calcification, ectasia and dissection of the aorta and, rarely, coarctation of the aorta. Superficially resembles the Marfan's syndrome. Synonym: familial aortic ectasia. (05 Mar 2000) |
| familial aortic ectasia syndrome | <cardiology, syndrome> The concurrence as an autosomal dominant trait of bicuspid aortic valve often with premature calcification, ectasia and dissection of the aorta and, rarely, coarctation of the aorta. Superficially resembles the Marfan's syndrome. Synonym: familial aortic ectasia. (05 Mar 2000) |
| accessory cartilage | A sesamoid cartilage. (05 Mar 2000) |
| accessory quadrate cartilage | The two to four cartilaginous plates of the wing of the nose posterior to the greater alar cartilage. Synonym: cartilagines alares minores, accessory quadrate cartilage. (05 Mar 2000) |
| alisphenoid cartilage | The cartilage in the embryo from which the greater wing of the sphenoid bone is developed. (05 Mar 2000) |
| annular cartilage | <anatomy> The lower most of the laryngeal cartilages, may be palpated just below the thyroid prominence Adjacent the cricoid cartilage and the first tracheal ring is the cricothyroid membrane, a site used for rapid emergency airway access (cricothyroidotomy). (13 Nov 1997) |
| apex of arytenoid cartilage | The pointed upper end of the cartilage which supports the corniculate cartilage and the aryepiglottic fold. Synonym: apex cartilaginis arytenoideae. (05 Mar 2000) |
| arch of cricoid cartilage | The narrow part of the cartilage that encircles the air passage anterior to the lamina. Synonym: arcus cartilaginis cricoideae. (05 Mar 2000) |
| arcuate crest of arytenoid cartilage | The ridge on the anterior surface of the arytenoid cartilage that separates the triangular from the oblong fovea. Synonym: crista arcuata cartilaginis arytenoideae, arched crest, arcuate crest. (05 Mar 2000) |
| arthrodial cartilage | The cartilage covering the articular surfaces of the bones participating in a synovial joint. Synonym: cartilago articularis, arthrodial cartilage, diarthrodial cartilage, investing cartilage. (05 Mar 2000) |
| articular cartilage | The cartilage covering the articular surfaces of the bones participating in a synovial joint. Synonym: cartilago articularis, arthrodial cartilage, diarthrodial cartilage, investing cartilage. (05 Mar 2000) |
| articular surface of arytenoid cartilage | The oval surface on the undersurface of the muscular process of the arytenoid for articulation with the cricoid cartilage. Synonym: facies articularis cartilaginis arytenoideae. (05 Mar 2000) |
| arytenoid cartilage | One of a pair of small pyramidal cartilages that articulate with the lamina of the cricoid cartilage. The corresponding vocal ligament and several muscles are attached to it. (12 Dec 1998) |