(a.) Pertaining to, or having the form of, a ring; forming a ring; ringed; ring-shaped; as, annular fibers.
(a.) Banded or marked with circles.
Example Sentences:
(1) Linear and annular gap junctions between neighbouring cells were present, particularly in Group 1.
(2) Sterile, pruritic papules and papulopustules that formed annular rings developed on the back of a 58-year-old woman.
(3) The dual-probe system incorporates a central collimated probe for monitoring activity in the LV surrounded by an annular detector collimated in such a manner as to provide simultaneous real-time monitoring of the LV background activity.
(4) The skin lesions resembled disseminated subacute lupus erythematosus on clinical examination, but actinic granuloma or annular elastolytic giant cell granuloma was seen in biopsy specimens of the lesions.
(5) Little anatomic information is available on the annular myocardium.
(6) Immunohistochemical studies support earlier reports of a rich nerve supply to the posterior longitudinal ligament, a less developed innervation of the anterior ligament and the outermost annular ring, and a total lack of innervation in deeper parts of the intervertebral disc.
(7) The case of a Black African patient with an annular subvalvular left ventricular aneurysm of unknown origin is described, and the pathological findings in this condition together with a review of the literature is presented.
(8) The lesions were annular or serpiginous and their surface was livid-red to pale-red.
(9) Although commonly subacute in presentation, complications of endocarditis were frequent: arterial emboli in five patients, new electrocardiographic conduction system abnormalities in nine, congestive heart failure in eight, annular or myocardial abscesses in five, and disruption of valve leaflets in three.
(10) Thirteen patients with localized granuloma annulare and 19 with the generalized form of the disease were typed for HLA antigens.
(11) There was a continuous relation between the incidence of stroke and the severity of mitral annular calcification; each millimeter of thickening as shown on the echocardiogram represented a relative risk of stroke of 1.24 (95 percent confidence interval, 1.12 to 1.37; P less than 0.001).
(12) Previous studies have shown that systolic annular nonplanarity can cause apparent prolapse in the four chamber view without actual leaflet displacement above the most superior points of the anulus, and there is evidence for such nonplanarity in vivo.
(13) The prevalence of aortic and mitral regurgitation as well as valvular and annular calcification did not differ between analyzed groups.
(14) Histologically, elastic tissue is destroyed by the granulomatous process in actinic granuloma, but not in granuloma annulare.
(15) The data on DPH anisotropy, pyrene excimerization and induction resonance energy transfer (IRET) from PM proteins to pyrene provided the evidence for age-dependent decrease in PM lipid phase fluidity inclusive of that of annular lipid.
(16) Specimens of the seawater fish annular seabream (Diplodus annularis) were caught from a polluted harbor area and from a clean reference area.
(17) A total of 54 patients with tick-borne annular erythema (TAE) were investigated.
(18) Mitral valve replacement and reconstruction of the interatrial septum were necessary because the tumor originated from the left atrial side of the interatrial septum and invaded the anterior mitral valve leaflet and around the annular area.
(19) (1) Annular stimulation of rods slightly facilitated rod-mediated flicker sensitivity to frequencies less than 10 Hz.
(20) After quench freezing, 1-2 mum thick sections of mouse liver were cut at 193 degrees K and picked up on a specially designed annular specimen holder covered with an aluminium coated nylon film.
Annulus
Definition:
(n.) A ring; a ringlike part or space.
(n.) A space contained between the circumferences of two circles, one within the other.
(n.) The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it.
(n.) Ring-shaped structures or markings, found in, or upon, various animals.
Example Sentences:
(1) 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.
(2) It is concluded that most annulus vacuums are a degenerative phenomenon at the attachment of the annulus to bone.
(3) A 29-mm Medtronic mitral valve was secured in the mitral position with a fixed number of ten pledgeted sutures in each annulus.
(4) Intervertebral disc proteoglycans (PGs) were radiolabelled in vivo (with [35SO4(2-)], 24 hours and 60 days prior to euthanasia, when lumbar discs were dissected into nucleus pulposus (NP) and annulus fibrosus (AF).
(5) To date, 3-dimensional studies have demonstrated that the mitral valve is saddle-shaped in systole, so that apparent superior leaflet displacement in the mediolateral 4-chamber view, often seen in otherwise normal individuals, lies entirely within the bounds defined by the mitral annulus and occurs without leaflet distortion or actual displacement above the entire mitral valve.
(6) The mean MAS was nearly twice that of 80 normal specimens (4.9 vs 2.5 mm), the range of MAS was increased from normal (0.11 vs 0.7 mm) and the mean diameter of the aortic annulus was decreased compared with the normal specimens, data that will be of interest to echo- and angiocardiographers in the clinical description of DSS, and to the surgeon who must resect these lesions.
(7) Echocardiography allowed preoperative classification of MI in 4 groups: Group 1 (n = 46) with prolapse of the posterior leaflet; Group 2 (n = 4) with prolapse of the anterior leaflet; Group 3 (n = 8) with prolapse of both mitral leaflets; Group 4 (n = 2) with abnormalities of the mitral annulus alone.
(8) Ten patients with roentgenographically demonstrable mitral annulus calcification (MAC) were found to have distinctive echocardiographic patterns.
(9) Pathologic features include focal and diffuse calcification and ossification in the anterior longitudinal ligament, paraspinal connective tissue, and annulus fibrosis, degeneration in the peripheral annulus fibrosis fibers, L-T-, and Y-shaped anterolateral extensions of fibrous tissue, hypervascularity, chronic inflammatory cellular infiltration, and periosteal new bone formation on the anterior surface of the vertebral bodies.
(10) Echocardiography and subsequently computed tomography showed a mass in the posterior mitral annulus causing incompetence of the valve.
(11) The valve gradient was significantly reduced (47%) from a mean (SD) of 72 (31) to 37 (23) mm Hg with no short term change in cardiac index after dilatation with a balloon with a mean (SD) diameter that was 118 (10.8)% of the valve annulus.
(12) Preoperatively there was a disproportionate increase in left coronary artery and annulus size during systole.
(13) This paper describes the histology and distribution of keratin patches and postulates a mechanism for their formation, based upon the movement of the superficial layer of corneocytes towards the annulus.
(14) Potentially damaging tensile stresses in the annulus fibrosus are directly related to the hydrostatic pressure in the centre of an intervertebral disc: the design and development of a miniature strain gauge pressure transducer is described for measuring such pressures.
(15) Replicas of freeze-fractured collagen fibrils of peripheral and central parts of the annulus fibrosus of bovine intervertebral discs show microfibrils which run either arranged in parallel or in a helix with an inclination-angle ranging from 4 degrees to 8 degrees.
(16) In normal subjects, the left ventricular (LV) epicardial apex swung up to the base only a few millimeters, and the mitral annulus ring moved about 14 mm as mean value toward the apex during systole.
(17) A method is described that allows intact removal of a prosthetic valve without damage to the annulus.
(18) In the annular form, only the annulus, and in the peripheral type only the peripheral connections of the valve are found in both ventricles.
(19) These results suggested that early mitral flow studied in an apical four chamber view is variably skewed both at the leaflet tips and at the annulus.
(20) In the presence of centre illumination, stimulation of the surround with an annulus caused a depolarization and a net decrease in conductance, and the reversal potential of the light-evoked response was shifted in a positive direction.