(n.) The great artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.
Example Sentences:
(1) The origin of the aorta and pulmonary artery from the right ventricle is a complicated and little studied congenital cardiac malformation.
(2) An innovative magnetic resonance imaging technique was applied to the measurement of blood flow in the abdominal aorta.
(3) The superior mesenteric artery and the abdominal aorta made the mean angle of 35.5 degree in patients with normal left renal vein, the mean angle of 45.4 degrees in those with left renal vein compression without nutcracker phenomenon, and the mean angle of 11.9 degrees in those with nutcracker phenomenon.
(4) After early repair of congenital cardiovascular defects, such as coarctation of the aorta, late stenosis may become a problem.
(5) The adherence of 51Cr-labeled platelets to rabbit aortae everted on probes rotated in platelet-red cell suspensions has been measured.
(6) Biosyntheses of TXA2 and PGI2 were carried out using arachidonic acid as a substrate and horse platelet and aorta microsomes as sources of TXA2 and PGI2 synthetases respectively.
(7) In the highest concentration tested, two other reagents 2,4-dimethoxybenzylamine and N-acetylimidazole, did not influence the activity of the steroisomers on aorta.
(8) To gain more information about sources of activator Ca2+ involved in the contraction of rat and guinea-pig aorta evoked by angiotensin II and their sensitivity to Ca2+ entry blockers, measurement of slowly exchanging 45Ca2+ was established.
(9) With a series of 117 aortic valve replacements, the authors have examined the results in relation to the method of protecting the myocardium while the aorta is clamped off.
(10) Emergency CT showed evidence of pericardial effusion suggesting hemopericardium, enlargement of the ascending aorta and a peripheral semilunar filling defect which caused a slight deformation of the true channel.
(11) In order to study the vascular and adrenal renin angiotensin system in the chronic phase (4 months after clipping) of 'two-kidney, one-clip' hypertension in rats, systolic blood pressure, plasma renin activity, and tissue renin-like activity in both aorta and adrenal have been measured.
(12) Arteriosclerotic plaques were found in the aorta and arteries of rabbits given homocysteine thiolactone, methionine or homocysteic acid, both parenterally and in a synthetic diet.
(13) A neonate, with a postconceptual age of 29 weeks, suffered thrombosis of the aorta as a consequence of umbilical artery catheterisation.
(14) Trimazosin at the dose used and under the conditions of study did not reverse the peripheral pressor effect of angiotensin II or B-HT920 but at higher concentrations, unlike prazosin, it relaxed the K+ contracted thoracic aorta.
(15) The relaxations in response to a nonreceptor-mediated endothelium-dependent vasodilator, A23187, and an endothelium-independent vasodilator, sodium nitroprusside, were not different between normal and diabetic aortas.
(16) The contents of esterified cholesterol and elastin in the aorta were higher in the control group than in the milk-fed group by 28 an 94 per cent, respectively.
(17) In rabbit aorta, pretreatment with 2-aminoisoquinoline, 1.3 (2H.4H)-dione (AQ, 10(-5) M and 10(-4) M) shifted the concentration-response relationship to noradrenaline (NA, 10(-9) M to 10(-4) M) in a parallel manner whereas the agent (10(-4) M) failed to affect the response to potassium and only slightly depressed Ca2+-induced contractions in a Ca2+-free medium in the presence of K+ (40 mM).
(18) Thus, the carotid pulse tracing provides an accurate reproduction of the morphology of the pressure tracing recorded from the ascending aorta, and when calibrated by peripheral blood pressure measurement, it can be used to calculate LV pressure throughout ejection.
(19) The part of the aorta wall that was removed showed signs of arterioschlerosis obliterans.
(20) In blood, ablation of porcine aorta was feasible at a distance of 3 mm.
Ventricle
Definition:
(n.) A cavity, or one of the cavities, of an organ, as of the larynx or the brain; specifically, the posterior chamber, or one of the two posterior chambers, of the heart, which receives the blood from the auricle and forces it out from the heart. See Heart.
(n.) The stomach.
(n.) Fig.: Any cavity, or hollow place, in which any function may be conceived of as operating.
Example Sentences:
(1) This paper discusses the typical echocardiographic patterns of a variety of important conditions concerning the mitral valve, the left ventricle, the interatrial and interventricular septum as well as the influence of respiration on the performance of echocardiograms.
(2) A quadripolar catheter was positioned either at the site of earliest ventricular activation during induced monomorphic ventricular tachycardia or at circumscribed areas of the left ventricle.
(3) The origin of the aorta and pulmonary artery from the right ventricle is a complicated and little studied congenital cardiac malformation.
(4) Thus, mechanical restitution of the ventricle is a dynamic process that can be assessed using an elastance-based approach in the in situ heart.
(5) Defibrotide prevents the dramatic fall of creatine phosphokinase activity in the ischemic ventricle: metabolic changes which reflect changes in the cells affected by prolonged ischemia.
(6) Mitoses of nuclei of myocytes of the left ventricle of the heart observed in two elderly people who had died of extensive relapsing infarction are described.
(7) Gardner proposed that anomalies at the exit of the fourth ventricle produce a communicating syringomyelia.
(8) The authors report a case of epidermoid tumor of the lateral ventricle.
(9) It may, however, be useful to compare local wall dynamics in the more isometrically-contracting basal segment with those in the middle portion which brings about most of the emptying of the ventricle.
(10) Patients with MID, but not those with DAT, exhibited correlations between enlargement of the third and lateral ventricles and severity of cognitive impairment.
(11) Following injections of HRP into the apex of the heart, the sinoatrial (SA) nodal region and the ventral wall of the right ventricle, we observed that HRP-labeled sympathetic neurons were localized predominantly in the right stellate ganglia, and to a lesser extent, in the right superior and middle cervical ganglia, and left stellate ganglia.
(12) When histamine (5 micrograms) was injected into three different levels of the ventricular system, the magnitude and duration of the resulting increases in plasma epinephrine and glucose were in the following rank order: the third ventricle greater than aqueduct much greater than fourth ventricle.
(13) To find out whether the deeper inhibition of replicative activity in ventricular myocytes influences fibroblasts and endothelial cells from ventricles, the proliferative activity of non-muscle cells was studied.
(14) Rapid right ventricular pacing increased the extent and degree of dyskinesia of the left ventricle, but premedication with nicorandil improved the wall motion.
(15) Computer-aided axial tomography revealed progressive development of atrophy of the left hemisphere and compensatory dilatation of the ventricles.
(16) Severity of leukoaraiosis around the frontal horns of the lateral ventricles correlated significantly with severity of leukoaraiosis of the centrum semiovale adjacent to the bodies of the lateral ventricles.
(17) Animals were chronically implanted with epidural or deep recording electrodes and a cannula in one lateral ventricle, and tested whilst seated in a primate chair.
(18) In acute experiments on 16 dogs the anterior descending branch of the left coronary artery was stenosed to produce a hypokinesia or dyskinesia of the anterior wall of the left ventricle.
(19) In spite of the limitations arising from the complex geometry of the right ventricule, echocardiography may be the most important non-invasive technique in the evaluation of the structural and functional repercussion of hypertension on the right ventricle.
(20) The length of the diaphragmatic wall of the heart in both the right and left ventricle was equal to the sum of the length of the inflow tract and the thickness of the ventricular wall at the apex.