(n.) A neck or narrow slip of land by which two continents are connected, or by which a peninsula is united to the mainland; as, the Isthmus of Panama; the Isthmus of Suez, etc.
Example Sentences:
(1) To explore relations between preload, afterload, and stroke volume (SV) in the fetal left ventricle, we instrumented 126-129 days gestation fetal lambs with ascending aortic electromagnetic flow transducers, vascular catheters, and inflatable occluders around the aortic isthmus (n = 8) or descending aorta (n = 7).
(2) Resection of the peritracheal segments of the thyroid gland with the isthmus extirpation was performed.
(3) Detection of PGE2-specific binding in the oviductal isthmus on Day 2 and Day 5 indicates that the oviduct is responsive to PGE2 when it is capable of transporting equine embryos.
(4) In control tissues there was a significant variation in vascularity according to geographic location in the following order of magnitude: fundus greater than corpus greater than cornua greater than isthmus.
(5) Inaccurate IFS diagnosis of depth of myometrial invasion can occur when tumor involves the uterine isthmus or cornua and when tumor invades areas of adenomyosis.
(6) Marginal overhang was the prevailing type of failure (17%), recurrent caries occurred at 12% of the restorations, unacceptable proximal contact at 10%, unacceptable marginal adaptation at 8% and isthmus fractures at 2%.
(7) Toral neurons project to the secondary visceral nucleus of the isthmus and to the central and anterior thalamic nuclei of the dorsal thalamus.
(8) However, of the four children with a residual gradient greater than 20 mm Hg, two were the youngest in the study, and in two the aorta was inadvertently dilated with a balloon 4 to 5 mm smaller than the isthmus diameter.
(9) Ventilatory conditions, or the existence of soft tissue density, were evaluated by HRCT at such locations as the supratubal recess, mesotympanum, anterior and posterior parts of the tympanic isthmus, epitympanum, and mastoid antrum.
(10) Ganglion cells innervating the posterior canal were located in the caudal part of the inferior ganglion, while those cells innervating the saccule were located in the rostral part of the inferior ganglion, scattered in the superior ganglion, and concentrated at the junction (isthmus) between the two.
(11) Examination of the characteristics of the EP reveals that there is a significantly higher proportion located in the isthmus in the group of patients without an IUD, whereas the fimbrial location is more frequent among patients with an IUD.
(12) In addition, labelled cells were found in the torus semicircularis, in and around the nucleus isthmus pars parvocellularis.
(13) Ova were consistently recovered from the ampulla 24 hours after ovulation, from both the ampulla and isthmus at 48 hours, and from the uterus 72 hours after ovulation.
(14) Some metric parameters (height and width, sizes of the isthmus the an angle between the corns) are given with the purpose of greater precision of roentgenological interpretation.
(15) A biopsy was taken from the mucosa of the intramural part, isthmus, and ampulla in each tube.
(16) End diastolic flow velocity just beneath the aortic isthmus was measured within 72 hours of cardiac catheterisation by pulsed Doppler echocardiography in 30 controls and 61 patients with aortic regurgitation.
(17) Microsurgical anastomosis restored electrical continuity between anastomosed segments in both the ampulla and isthmus.
(18) One of them was located at mid-descending thoracic aorta and another was aortic isthmus.
(19) Coitus induced ovulation produced a characteristic oviductal motility pattern consisting of (i) initial relaxation of both isthmus and ampulla (4-12 h) followed by (ii) increased isthmic motility in the face of a continually relaxed ampulla (36-48 h), and finally phase (iii) leading to restitution of both ampullary and isthmic motility to the base-line at 72-96 h. Estimation of ova positions indicated the presence of fertilized eggs in the ampulla and ampullo-isthmic junction at 48 h and the ova could come to the end of the isthmic segment only at 72 h or after.
(20) By their nature, intracoronal restorations provide resistance to nonaxial dislodging forces, and features such as the occlusal isthmus and proximal boxes and grooves will obviously also increase this resistance.
Narrow
Definition:
(superl.) Of little breadth; not wide or broad; having little distance from side to side; as, a narrow board; a narrow street; a narrow hem.
(superl.) Of little extent; very limited; circumscribed.
(superl.) Having but a little margin; having barely sufficient space, time, or number, etc.; close; near; -- with special reference to some peril or misfortune; as, a narrow shot; a narrow escape; a narrow majority.
(superl.) Limited as to means; straitened; pinching; as, narrow circumstances.
(superl.) Contracted; of limited scope; illiberal; bigoted; as, a narrow mind; narrow views.
(superl.) Scrutinizing in detail; close; accurate; exact.
(superl.) Formed (as a vowel) by a close position of some part of the tongue in relation to the palate; or (according to Bell) by a tense condition of the pharynx; -- distinguished from wide; as e (eve) and / (f/d), etc., from i (ill) and / (f/t), etc. See Guide to Pronunciation, / 13.
(n.) A narrow passage; esp., a contracted part of a stream, lake, or sea; a strait connecting two bodies of water; -- usually in the plural; as, The Narrows of New York harbor.
(v. t.) To lessen the breadth of; to contract; to draw into a smaller compass; to reduce the width or extent of.
(v. t.) To contract the reach or sphere of; to make less liberal or more selfish; to limit; to confine; to restrict; as, to narrow one's views or knowledge; to narrow a question in discussion.
(v. t.) To contract the size of, as a stocking, by taking two stitches into one.
(v. i.) To become less broad; to contract; to become narrower; as, the sea narrows into a strait.
(v. i.) Not to step out enough to the one hand or the other; as, a horse narrows.
(v. i.) To contract the size of a stocking or other knit article, by taking two stitches into one.
Example Sentences:
(1) The PSB dioxygenase system displayed a narrow substrate range: none of 18 sulphonated or non-sulphonated analogues of PSB showed significant substrate-dependent O2 uptake.
(2) Comparison of developmental series of D. merriami and T. bottae revealed that the decline of the artery in the latter species is preceded by a greater degree of arterial coarctation, or narrowing, as it passes though the developing stapes.
(3) This promotion of repetitive activity by the introduction of additional potassium channels occurred up to an "optimal" value beyond which a further increase in paranodal potassium permeability narrowed the range of currents with a repetitive response.
(4) In all immunized rabbits the antisera obtained with the 7 alpha-derivative had a higher affinity and a narrower specificity than the antiserum obtained with the 7 beta-derivative.
(5) That is, he believes, to look at massively difficult, interlocking problems through too narrow a lens.
(6) Photograph: AP Reasons for wavering • State relies on coal-fired electricity • Poor prospects for wind power • Conservative Democrat • Represents conservative district in conservative state and was elected on narrow margins Campaign support from fossil fuel interests in 2008 • $93,743 G K Butterfield (North Carolina) GK Butterfield, North Carolina.
(7) Their narrowed processes pass at a common site through the muscle layer and above this layer again slightly widen and project above the neighbouring tegument.
(8) These patients did not have narrow anterior chamber angles preoperatively, and several were aphakix with surgical iris colobomas.
(9) The linewidths of the methionine Cepsilon resonances are narrowed by increasing temperature according to an Arrhenius energy of activation of nearly 3 kcal.
(10) The detergent lauryl maltoside abolishes respiratory control and proton ejection by cytochrome c oxidase-containing proteoliposomes over a narrow concentration range.
(11) Per-rotational nystagmus was recorded in rabbits with unilaterally narrowed vertebral arteries or following unilateral cervical sympathectomies.
(12) However, the narrow range of the ED50 suggests relatively little variation in the response of the different isolates in vivo and similarly small variation was also noted in some of the tests in vitro.
(13) Eight patients had glaucoma only in one eye; three narrow-angle glaucoma, three primary open-angle glaucoma and two secondary glaucoma.
(14) In the fifth case the vein was too narrow to allow catheterization.
(15) It was found that within the dorsal part of the well known pressor area there is a narrow strip, 2.5 mm lateral from the mid line, starting ventral to the inferior colliculus and ending in the medulla close to the floor of the IV ventricle, from which vasodilatation in skeletal muscles is selectively obtained.
(16) Each border was within a region of 11 nucleotides and gave rise to a narrow size range (1248-1261 nucleotides) for the population of 22 subgenomic DNAs.
(17) These factors include narrowing of septal arteries and the artery to the atrioventricular node, preservation of fetal anatomy with dispersion in the atrioventricular node and His bundle, fibrosis of the sinus node, clefts in the septum, multiple atrioventricular pathways and massive myocardial infarction.
(18) Time suggests that the FBI inquiry has been extended from a relatively narrow look at alleged malpractices by News Corp in America into a more general inquiry into whether the company used possibly illegal strongarm tactics to browbeat rival firms, following allegations of computer hacking made by retail advertising company Floorgraphics.
(19) These three activities, appearing within a narrow range of molecular weights, different from those of other known lymphokines, suggest the existence of a distinct class of lymphokine mediators with the common function of influencing functional properties of tumor cells.
(20) The narrow intercellular ridge is smooth, whereas the epithelial cells have small cytoplasmic knobs between the cilia.