What's the difference between ostium and passage?

Ostium


Definition:

  • (n.) An opening; a passage.

Example Sentences:

  • (1) A block of tissue bounded by the ostium of the coronary sinus, the pars membranacea, the septal leaflet of the tricuspid valve and the atrial and ventricular septa is removed.
  • (2) Depending on local anatomical properties duplex scanning failed to make a decision about the state of the ostium of the vertebral artery in 24% of the cases.
  • (3) In the hearts of normal weight (195 to 300 gm) the Thebesian valve covered the ostium of the coronary sinus an average of 41%, with complete coverage in 20%.
  • (4) Operative intervention showed a dysplastic bicuspid aortic valve with a membrane that covered the left coronary ostium.
  • (5) The intervention was undertaken for restenosis of the left venous ostium in 255 and iatrogenic mitral insufficiency in 20 patients.
  • (6) The left coronary ostium was reimplanted with Carrel patch method and the right coronary artery was bypassed with the saphenous vein graft.
  • (7) Technical problems encountered with the use of these catheters included instability of the right Judkin's catheter in the right coronary ostium owing to high torquability, streaming of contrast during left coronary injections, and difficulty entering the left ventricle with a pig-tail catheter.
  • (8) The proximal topography of the left common carotid artery ostium is a useful sign in the diagnosis of this kind of abnormality.
  • (9) Four cases of atrial septal defect, "ostium secundum", associated with pulmonary hypertension and congestive heart failure in children under the age of two years are reported.
  • (10) On the basis of this study the area of the right coronary ostium appears to be a bottleneck with regard to an adequate blood supply to a hypertrophic myocardium.
  • (11) Frequently a contrast medium reflux occurs out of the coronary ostium into the aorta.
  • (12) The data show that coronary sinus blood flow changes from 23 to 68 ml X min-1 per cm catheter movement, the nearer the ostium the greater the change.
  • (13) Another facilitating factor which is discussed is that blowing the nose may catch tenacious mucus which has partly passed through the ostium by the ciliary activity in the sinus.
  • (14) There were 69 SBs: 43 with severe ostium stenosis (type A); 6 with severe non ostial stenosis (type B); and 20 with no or slight nonostial stenosis (type C).
  • (15) The following abnormalities were found at operation: a disrupted right coronary cusp, a torn chorda of the anterior mitral leaflet, a dilated tricuspid annulus, and an intimal tear on the aortic root near the right coronary ostium that had developed into an aneurysm of the sinus of Valsalva.
  • (16) Furthermore, the method is useful to evaluate the optimal therapy to restore ventilation in the case of an obstructed ostium demonstrated before and after surgical opening in the inferior meatus.
  • (17) The transurethral dehiscence of the ostium is a therapeutic method which causes the spontaneous passage of incarcerated intramural ureteroliths.
  • (18) The sinus cavity was connected with the nasal cavity through an ostium.
  • (19) It is felt that the sphenoid mucocoele developed as a result of occlusion of the sinus ostium by scarred mucosa following radiotherapy.
  • (20) The left coronary artery had an anomalous origin; the left descending coronary artery originated from an independent ostium located at the right Valsalva sinus, the circumflex artery had its origin at the same ostium as the right coronary artery.

Passage


Definition:

  • (v. i.) The act of passing; transit from one place to another; movement from point to point; a going by, over, across, or through; as, the passage of a man or a carriage; the passage of a ship or a bird; the passage of light; the passage of fluids through the pores or channels of the body.
  • (v. i.) Transit by means of conveyance; journey, as by water, carriage, car, or the like; travel; right, liberty, or means, of passing; conveyance.
  • (v. i.) Price paid for the liberty to pass; fare; as, to pay one's passage.
  • (v. i.) Removal from life; decease; departure; death.
  • (v. i.) Way; road; path; channel or course through or by which one passes; way of exit or entrance; way of access or transit. Hence, a common avenue to various apartments in a building; a hall; a corridor.
  • (v. i.) A continuous course, process, or progress; a connected or continuous series; as, the passage of time.
  • (v. i.) A separate part of a course, process, or series; an occurrence; an incident; an act or deed.
  • (v. i.) A particular portion constituting a part of something continuous; esp., a portion of a book, speech, or musical composition; a paragraph; a clause.
  • (v. i.) Reception; currency.
  • (v. i.) A pass or en encounter; as, a passage at arms.
  • (v. i.) A movement or an evacuation of the bowels.
  • (v. i.) In parliamentary proceedings: (a) The course of a proposition (bill, resolution, etc.) through the several stages of consideration and action; as, during its passage through Congress the bill was amended in both Houses. (b) The advancement of a bill or other proposition from one stage to another by an affirmative vote; esp., the final affirmative action of the body upon a proposition; hence, adoption; enactment; as, the passage of the bill to its third reading was delayed.

Example Sentences:

  • (1) Release of 51Cr was apparently a function of immune thymus-derived lymphocytes (T cells) because it was abrogated by prior incubation of spleen cells with anti-thymus antiserum and complement but was undiminished by passage of spleen cells through nylon-wool columns.
  • (2) Exposure to nanomolar concentrations of saralasin, an Ang II agonist, attenuated the passage of the fluorophores across the monolayers by 50-75%.
  • (3) Cultured cells from fourth to ninth passage showed positive labelling for S 100 protein, carbonic anydrase (CAA), glutamine synthetase (GS), alpha cristallin (alpha C) and polyclonal glial fibrillary acidic protein (GFAP) antibody, but were negative for both monoclonal GFAP antibody and also for Muller cells in the retina.
  • (4) In the case of the latter, it show either a more or less typical appearance of radicolography only or, more rarely, a picture which combines opacification of the epidural space with the subarachnoid passage of the contrast medium.
  • (5) After approximately 20 in vitro passages, Chinese hamster kidney (CHK) cell cultures transformed upon exposure to different strains of SV 40 can show a diploid modal chromosome number of 22 with chromosome counts exclusively or essentially in the diploid range (20-25).
  • (6) In late-passage and cloned HUT102 cells, an increase in HTLV production was concordant with a decrease in constitutive interferon production and the loss of mature T lymphocyte antigens.
  • (7) A reduction of salmonellae during the passage of the pump and pressure conduit-pipe, combining east- and west-side of Kiel fjord, could be seen.
  • (8) The resulting cell lines have a stable phenotype and retain the changes which result from transformation even after extended passaging.
  • (9) Abe’s longstanding efforts toward those goals, which include the successful passage of a state secrets act and efforts to expand the scope of Japan’s military activities have already damaged relations with China.
  • (10) It is inferred that in this experimental model (1) high-density lipoproteins are probably excreted in the glomerular filtrate, (2) alterations in the composition of the excreted lipoproteins may occur during their passage through the nephron.
  • (11) We report that kainic acid lesions of the posterior corpus striatum, which preferentially spare fibers of passage while destroying striatopallidal neurons, produce a stimulus-sensitive movement pattern in rats that has a highly specific sensory trigger.
  • (12) The cells have been maintained through 23 serial passages, and the modal number of chromosomes was calculated to be 55.
  • (13) The rate of passage of digesta was significantly reduced in both pair-fed control (50 per cent) and infected (74 per cent) groups.
  • (14) Unlike cells grown on plastic, RME cells grown on type I collagen were readily subculturable and serial subculture resulted in the cells undergoing 15-20 population doublings (5-6 passages) before exhibiting any loss of growth potential.
  • (15) The major difficulty encountered with the current technique is the danger of neurologic injury during the passage and handling of conventional wires, especially in extensive procedures.
  • (16) In addition, SPT16 is identical to CDC68, a gene previously shown to be required for passage through the cell cycle control point START.
  • (17) Selective catheterisation enabled opacification under pressure in more than 80 p. cent of cases, with perfect visualisation of the entire tubes and significant peritoneal passage.
  • (18) The effects of Urocalun and jumping exercise upon the passage of calculi were studied.
  • (19) The alterations in the glycosaminoglycans and collagen induced by hypoxia may cause changes in the passage of macromolecules through the aortic wall.
  • (20) Despite the lack of expression of the endogenous CYP17 gene in transfectants from late-passage cells, induced luciferase activity was higher in late-passage transfectants than early-passage transfectants for both the -2544 and -488 constructs.

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