(n.) An axis to which a carpel of a compound pistil may be attached, as in the case of the geranium; or which is left when a pod opens.
(n.) A columnlike axis in the capsules of mosses.
(n.) A term applied to various columnlike parts; as, the columella, or epipterygoid bone, in the skull of many lizards; the columella of the ear, the bony or cartilaginous rod connecting the tympanic membrane with the internal ear.
(n.) The upright pillar in the axis of most univalve shells.
(n.) The central pillar or axis of the calicles of certain corals.
Example Sentences:
(1) Two different prototypes of columella materials made from aluminum oxide ceramics were newly designed by the author for ossicular reconstruction.
(2) In the infant and small child, when most repairs are done, nose tip projection is due more to the alar dome component than to the columella.
(3) Definitive lip and columella surgery is facilitated.
(4) The infection rate for P. columella from MI, was 50% and for L. gedrosiana was 32.5%, whereas L. natalensis, S. elodes and S. attenuata were refractory.
(5) The most important reason for the resorption are mechanical factors; this has been shown by comparing the load of implanted tissue on the columella and on the dorsum of the nose.
(6) Vibration measurements were made at a number of positions near the proximal (basal) end of the basilar membrane, and on the columella footplate, of Caiman crocodilus using a capacitive probe.
(7) In the same manner, Denonvilliers' flap may be employed to restore contour of the nasal ala, since its scar sequel is very acceptable, and Dieffenbach's flap may be used to reconstruct the columella.
(8) Newborns have been examined with an otoscope and two different kinds of nasal lesions have been considered: (1) pyramid deformation with septum dislocation and columella deviation; (2) deviation and subluxation of the septum.
(9) Data regarding the 2,341 discovery sites of L. columella recorded by collectors during surveys are analysed.
(10) Where the inferior view shows a "tent tip" skyline, lateral crus advancement is required and can be achieved in asynchronous repairs by Pigott alar leapfrog at primary repair or by Potter V-Y advancement at the time of forked flap columella lengthening.
(11) Paucity of lobular cartilage; the flat dorsum; short columella; wide flaring nares; and skin that tends to keloid formation have led many surgeons to attempt radical surgical techniques to obtain rather limited results.
(12) The value of the modified Millard method in the management of unilateral nose deformities and the author's own approach to primary columella elongation in bilateral cleft are presented.
(13) Over-lengthening the columella at the expense of alar dome projection results in an unaesthetic nose at maturity.
(14) A comparison of three types of columella currently used--bone, ceramic, and polyethylene--is presented.
(15) In most patients, effective treatment was to repack the nose and cauterize a bleeding site, or to suture an open area either in the incision or at the columella-septum junction.
(16) The results of the study would suggest that the median forehead flap can be elevated without incorporating the supratrochlear vessels, but the flap design should be reserved for those clinical situations where the pedicle must be extensively mobilized, e.g., reconstruction of the nasal tip and columella and the presence of a low-lying frontal hairline.
(17) There was a thick columella and an elongated continuous nasal septum separating the nasal cavities.
(18) Philtrum length, philtrum shape, philtrum depth, nasolabial triangular area, vermilion thickness, Cupid's bow peak, horizontal upper lip groove, vermilion border, alar size, depth of alar groove, nasal deviation, nostril shape, nasal tip, columella height, sill shape, columella width, and facial balance of the anterior, profile, and caudal views are used as aesthetic checkpoints for the results of a cleft lip operation.
(19) The surgical technique used enables correction in a single operation through suture of the lateral portions at the midline and elevation of the bifurcated flap of the prolabium to form the columella and the nasal floor.
(20) The lengthening and lowering of the short and sometimes retracted columella and narrowing of the alar bases is performed by making a columellar splitting incision and extending it along the alar sills.
Tympanum
Definition:
(n.) The ear drum, or middle ear. Sometimes applied incorrectly to the tympanic membrane. See Ear.
(n.) A chamber in the anterior part of the syrinx of birds.
(n.) One of the naked, inflatable air sacs on the neck of the prairie chicken and other species of grouse.
(n.) The recessed face of a pediment within the frame made by the upper and lower cornices, being usually a triangular space or table.
(n.) The space within an arch, and above a lintel or a subordinate arch, spanning the opening below the arch.
(n.) A drum-shaped wheel with spirally curved partitions by which water is raised to the axis when the wheel revolves with the lower part of the circumference submerged, -- used for raising water, as for irrigation.
Example Sentences:
(1) To test ciliary clearance, the fluid was placed in either the tympanum or the mastoid bulla.
(2) These areas are the anterior epi-tympanum, the recess between the tympanic membrane and the anterior and inferior canal walls, the facial ridge and the sump that can form behind it, the sino-dural angle and the mastoid tip.
(3) This study has demonstrated the anatomical relations of the cochlea to structures in the medial wall of the tympanum, and has shown that surgical access can be obtained to the terminal auditory nerve fibres supplying the basal, middle and apical turns of the cochlea.
(4) From this preliminary investigation, the device successfully maintained atmospheric pressures in the tympanum, compensated for Eustachian tube malfunction, prevented otorrhea and recurrence of middle ear effusions.
(5) Temperature within the brain and the esophagus and at the tympanum were obtained in a 12-yr-old male in a series of experiments that began 8 days after surgery for implantation of a drainage catheter.
(6) This is invariably indicated on a pre-operative basis, except in two circumstances: --when the glomus, tumour is small and situated close to the drum of the tympanum, its surgical excision posing no problem of haemostasis under these circumstances: --when radiotherapy is envisaged as treatment of the glomus tumour when surgery is impossible.
(7) Although the clinical importance of these differences remains to be established, the authors believe they are substantial enough to justify continued use of tympanostomy tubes in the primary surgical therapy of chronic secretory otitis media, when medical therapy and observation indicate the need for drainage to improve hearing or correct anatomic deformities of the tympanum.
(8) The thick tympanum, while disadvantageous as an aerial receptor, likely enhances low-frequency bone conduction hearing.
(9) The inflammatory process, issuing from the external auditory passage and under circumvention of the tympanum, spreads to the skull base and according to the localisation causes adequate pareses of the brain nerves.
(10) Massive discharge occurred only with low viscosity fluid placed in the tympanum, whereas small amounts of highly viscous fluid were cleared by linear discharge.
(11) Otorrhea is the most common complication of surgical drainage of the tympanum for the treatment of chronic secretory otitis media.
(12) The authors report six cases of rare ear diseases: fibrous dysplasia of the tympanum mimicking an partially obstructive osteoma of the external auditory canal.
(13) The tube with a beveled head and split shank is very convenient and effective for the treatment since it is not only easily inserted but also easily removed, preventing it from migration into the tympanum.
(14) The existing peri-ligamentous space of the disco-malleolar ligament is a latent way between temporomandibular joint rear and tympanum.
(15) It has been assumed that the common inheritance of all early tetrapods was a light, rod-like stapes associated with a temporal notch in the otic region that was thought to have supported a tympanum, or eardrum.
(16) Seromucous effusions were found in the tympanum in 91% of 208 cases of cleft palate.
(17) The experimental evidence of cochleovestibular toxicity of aminoglycosides applied locally in the presence of a perforated tympanum leaves no room for doubt.
(18) Insertion of tympanostomy tubes to provide prolonged aeration and drainage of the tympanum in cases of chronic secretory otitis media has become the most commonly performed operation in children.
(19) In all animals, nontympanic surfaces were most responsive to low frequencies, and the tympanum was most responsive to high frequencies.
(20) The method seems to have the following merits: permanent ventilation of the tympanum with preservation of an intact drum (from the functional point of view); no tympanophonia or autophonia; simple technique, short operative period (five minutes); no risk of postoperative complications; and no danger of ascending infection of the middle ear from the ear canal.