What's the difference between atrium and auricle?

Atrium


Definition:

  • (n.) A square hall lighted from above, into which rooms open at one or more levels.
  • (n.) An open court with a porch or gallery around three or more sides; especially at the entrance of a basilica or other church. The name was extended in the Middle Ages to the open churchyard or cemetery.
  • (n.) The main part of either auricle of the heart as distinct from the auricular appendix. Also, the whole articular portion of the heart.
  • (n.) A cavity in ascidians into which the intestine and generative ducts open, and which also receives the water from the gills. See Ascidioidea.

Example Sentences:

  • (1) Injection of carbachol into the AV3V produced the expected natriuresis, which was accompanied within 20 min by a dramatic rise in the plasma ANP concentration and a rise in ANP content in the medial basal hypothalamus, the neurohypophysis, and particularly the anterior hypophysis but without alterations in the content of ANP in the lungs or the right or left atrium.
  • (2) Transesophageal echocardiography (TEE) is a semi-invasive examination that provides better images of the atrium than classical transthoracic echocardiography (TTE) due to the anatomical positioning of the captor and the high frequency Doppler apparatus used.
  • (3) We report a case of tamponade due to an effusion of blood which had occurred two weeks after an aorto-coronary bypass and was unusually located behind the left atrium.
  • (4) The radio-activity of 99mTc of the entire cardiac blood pool including the large vessels (T), the right ventricle including the right atrium (RV) and the left ventricle (LV) was calculated from the 30 degrees anterior oblique cardiac pool scintigram.
  • (5) Each study consisted of a 2-h control period followed by 4 h of increased lung microvascular pressure produced by inflation of a balloon in the left atrium.
  • (6) Ultrastructurally, the atrial myocardial cells in all three patients were hypertrophied, and two patients had evidence of focal cell degeneration; the atrium was markedly dilated, but atrial arrhythmias were not noted.
  • (7) Multiple determination of size, shape, and diameter of the left atrium were made during the control state and under conditions of varied ventricular outflow resistance in intact anesthetized dogs with markers chronically attached to the mitral annulus and the valve cusps.
  • (8) The right atrium thrombosis in the region of Chiari network resulted in the thromboembolism of the left pulmonary artery this being an immediate cause of death.
  • (9) Just prior to the end of the infusion period, 51Cr-labeled microspheres were injected into the left atrium to measure regional myocardial blood flow.
  • (10) Two-dimensional echocardiography revealed enlargement of the left ventricle, left atrium, and aortic root as well as dilatation of the left main coronary artery.
  • (11) The fistula was ligated by an access through the right atrium with good nearest and long-term results.
  • (12) M-mode and two dimensional echocardiography demonstrated abnormal echoes in the left atrium, the density being 22.7 Hounsfield Unit.
  • (13) His bundle recordings and premature atrial stimulation from coronary sinus, mid-right atrium and high-right atrium were performed in a patient with repetitive supraventricular tachycardias.
  • (14) Earlier surgical correction of this disorder was associated with the problem of stenosis at the anastomotic site with the left atrium.
  • (15) Although the histologic changes in the right atrium and contralateral lung are worrisome, no cardiac nor pulmonary problems arose over the 1 year follow-up.
  • (16) The visualized turbulent flow was consistent with a ventriculoseptal defect but also appeared to extend posteriorly into the left atrium in a direct line with the septal communication.
  • (17) After control conditions were established, PDG was injected into the right atrium.
  • (18) Echocardiograms showed good left ventricular function and a large coil of apparent thrombus in the right atrium prolapsing into the right ventricle.
  • (19) An unusual appearance of echoes behind the aorta bulging into the left atrium in diastole on both the M-mode and cross-sectional echo suggested this diagnosis prior to cardiac catheterization.
  • (20) Inotropic and chronotropic effects were determined in vitro in cat papillary muscle and right atrium, respectively.

Auricle


Definition:

  • (n.) The external ear, or that part of the ear which is prominent from the head.
  • (n.) The chamber, or one of the two chambers, of the heart, by which the blood is received and transmitted to the ventricle or ventricles; -- so called from its resemblance to the auricle or external ear of some quadrupeds. See Heart.
  • (n.) An angular or ear-shaped lobe.
  • (n.) An instrument applied to the ears to give aid in hearing; a kind of ear trumpet.

Example Sentences:

  • (1) This article presents the author's preferred technique for reconstructing the auricle, simultaneously using Mustarde's mattress sutures, Cochrane's anterior scoring of the antihelix, and the approximating of the concha to the mastoid.
  • (2) Analogous results were obtained in semithin sections of GMA-embedded auricles stained by the periodic acid-Schiff (PAS) technique.
  • (3) The influence of electrolyte composition and glucose concentration of a cryoprotective medium on the survival of auricle fragments from adult rat hearts after storage at -196 degrees C was investigated.
  • (4) Microangiopathic changes were observed on the material obtained by skin biopsy of the auricle and the reason for selecting this localization was explained.
  • (5) 74 rat incisor odontogenic organs were autotransplanted intradermally into the auricle.
  • (6) Therefore, lg1 mutant sectors not only fail to induce ligule and auricle, but are also disrupting some form of intercellular communication that is necessary for the normally coordinated development of the ligular region.
  • (7) The patient has a typical saddle nose and drooping auricles.
  • (8) In 135 patients with mitral stenosis of the III and IV stages oxidative phosphorylation in the mitochondria of the left cardiac auricle was studied by the polarographic method.
  • (9) Besides the negative inotropic action of ethanol on cardiac muscle, this paper describes also an "indirect effect" which appears when the ethanol treated isolated strip auricle preparation is washed with low Ca Tyrode solution.
  • (10) In our histological examination of 42 ears (auricles) which were taken from 18 fetus and three adults, the intracartilaginous fibrous tissue with blood vessels and lymphatics were found in 12 ears and interruption of the auricular cartilage in 22 ears.
  • (11) This presentation will review two such cases as well as give an overview of the embryogenesis and teratogenesis of the auricle.
  • (12) In 1952, Goldenhar described a pair of monozygotic twins who were discordant for epibulbar dermoids, auricular appendages, malformations of the auricle, and hemifacial microsomia.
  • (13) Normal LE rats had low levels of left ventricular ANP mRNA and barely detectable ANP mRNA in the right ventricle, DI rats showed a 3-fold greater ANP mRNA concentration in the left ventricle than age-matched LE controls, and ANP mRNA levels were also increased in the left auricle of DI rats.
  • (14) (1) The increase in plasma ANF during volume expansion is not impaired in SHR with newly established hypertension; (2) captopril treatment decreases afterload and the changes in left ventricular end diastolic pressure during volume expansion in SHR, without affecting plasma ANF increases; (3) both the auricles, but not the ventricles, contribute to enhanced ANF secretion caused by acute volume expansion in SHR and WKY rats.
  • (15) The highest potassium decrease was observed in the left ventricle and right auricle.
  • (16) Biopsies of right auricle of human heart have been obtained during open heart surgery from 6 patients aged 23 to 49.
  • (17) Engel (1966) was the first to report a series of pseudocysts of the auricle in Chinese.
  • (18) A linear skin incision was made, beginning behind the auricle and extending along the anterior margin of the sternocleidomastoid muscle, and the sternocleidomastoid muscle was divided just below the tip of the mastoid process.
  • (19) 1) auricles on the posterior segment were absent, 2) five pairs of eyes were present in the anterior segments with the eye pairs 3 and 4 separated by an annulus, and 3) teeth were not observed, this specimen was identified as Dinobdella ferox.
  • (20) The effect of Na and K ions on active Na transport was studied in guinea-pig auricles by means of flame photometry.