What's the difference between tympani and tympanum?
Tympani
Definition:
(pl. ) of Tympano
Example Sentences:
(1) The lengths and heights of the scalae tympani in ten pairs of serially sectioned temporal bones were measured by an adaptation of the serial section method of cochlear reconstruction.
(2) With the aid of analysis of afferent impulse activity in the cat chorda tympani, it was shown that the effect of application of organic acids solutions of the same pH to the tongue could be represented as follows: propionic acid greater than lactic acid greater than pyruvic acid.
(3) The threshold functions differ from those observed in patients with scala tympani electrodes, primarily at low sinusoidal frequencies and long pulse widths.
(4) At the same time the data are obtained on variations in topography of the chorda tympani at various form of the intratemporal fossa.
(5) One group of rats was tested both before and after bilateral removal of the chorda tympani.
(6) Each mastoid and epitympanum was extensively involved with chronically inflamed tissue which surrounded the ossicles and chorda tympani nerve.
(7) Both chorda tympani of these and 4 control mice were later excised.
(8) The electrodes can be implanted in bundles through the round window or into the modiolus; they can, however, also be introduced individually through several drill holes in the promontory for placement in the scala tympani and vestibuli.
(9) In this respect, round-window and scala tympani stimulation sites are equally efficacious.
(10) Click evoked electromyographic (EMG) recordings were made from the contralateral tensor tympani muscle of anaesthetised mice.
(11) It was hypothesized that abnormal signals mediated by the chorda tympani nerve (CT) could be causally involved in NaCl avoidance by F344 rats.
(12) Ciliated and secretory cells were concentrated around the Eustachian tube orifice; additionally, ciliated cells were seen in two distinct bands extending posteriorly below the cochlea in the hypotympanum and above the cochlea toward the tensor tympani muscle.
(13) It is the purpose of this study to attempt a correlation of function, by electromyographic means, of the tensor tympani and tensor veli palatini muscles in humans.
(14) Taste sensitivity of preweanling mice was studied by examining responses of the chorda tympani (CT) and glossopharyngeal (GL) nerves to various taste stimuli, and was compared to that of adult mice.
(15) Beta-adrenergic blocking drugs reduced or abolished the hyperaemia of isoproterenol and reduced that of chorda tympani nerve stimulation.
(16) Only the scala tympani compartment of the basal cochlear turn remained patent.
(17) The results suggest that under physiological conditions the CSF also flows through the cochleae aqueduct and the protein concentration in the Scala tympani decreases especially in the basal winding.
(18) To determine whether changes in salt and sugar responses occur during development in the hamster, multifiber responses were recorded from the chorda tympani nerve while stimulating the anterior tongue of preweanling, early postweanling, and adult hamsters.
(19) Because there are a lot of contradictory opinions in the literature we investigated the intra- and extraosseous pathway of the Chorda tympani by dissecting the heads of 6 cadavers.
(20) The electrical activity in the chorda tympani proper nerve of two of the monkeys was recorded during the application to the tongues of 0.02% monellin and thaumatin, 0.5% miraculin and stimuli representing the four taste qualities.
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.