(n. sing. & pl.) A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.
Example Sentences:
(1) The observed staining indicated that the epithelium of the external auditory meatus has a pattern of keratin expression typical of epidermis in general and the epithelium of the middle ear resembles simple columnar epithelia.
(2) For the management and prevention of the recurrent ascending infections long-term urinary disinfection and meticulous toilet of the external meatus are recommended.
(3) In addition, histopathologic examination revealed squamous epithelial hyperplasia in the vestibule; inflammation, epithelial necrosis, mucosal erosions, and squamous metaplasia of the respiratory epithelium in the anterior nose; and olfactory sensory cell loss in the dorsal medial meatus.
(4) So far we believe that loss of hearing caused during these operations is mainly due to the unfavorable location of the cochlear blood supply through the meatus.
(5) Blood at the urethral meatus was noted in only five patients, gross hematuria without metal blood in another three, and a displaced prostate on rectal exam was found in 10 cases.
(6) The purpose of this study was to analyze the results obtained with a surgical technique developed to prevent postoperative stenosis or total closure of the newly formed auditory meatus and to achieve at least serviceable hearing in the majority of cases.
(7) The cochlear summating potential (SP) preceding the auditory nerve compound action potential (AP) was elicited by broadband alternating condensation and rarefaction clicks and recorded by noninvasive electrodes from the external auditory meatus (EAM) of 60 volunteers of both sexes, 12 to 67 years old, who had normal hearing for age.
(8) The right petrous bone was hypoplastic and showed total superior dehiscence of the internal acoustic meatus.
(9) The observations allow the conclusion that during acute otitis media the duration of mastoiditis development reduced and many classical symptoms of mastoiditis, e. g. protrusion of the posterior-superior wall of the external acoustic meatus, profuse purulent discharge from the ear, hyperemia, swelling of the behind-the-ear area, occurred less frequently.
(10) A case is reported of angiomatous malformation involving the facial and vestibilocochlear nerves within the internal auditory meatus.
(11) There is no need for fenestration via the inferior meatus.
(12) Antibacterial ointment applied to the urethral meatus in females with recurrent urinary tract infections (UTIs) has been reported to decrease the incidence of UTIs.
(13) So the internal auditory meatus was packed with Gelfoam and muscle piece.
(14) 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.
(15) In most of these ears the angle from the medial edge of a suboccipital craniectomy allowed the surgeon a direct view of the lateral part of the internal auditory meatus with good exposure of the transverse crest without his having to open the labyrinth.
(16) An excellent surgical result requires careful case selection, avoiding cases with thin or rigid ventral parameatal skin or a meatus too proximal or too wide.
(17) A serie of 20 dissections carried out in the anatomy Laboratory enabled us to make a close observation of the middle meatus of the nasal cavity.
(18) In the open meatus acoustic energy radiated by the bony walls becomes dissipated.
(19) The axis of the internal acoustic meatus to the horizontal plane in adults and postnatal changes.
(20) A terminal meatus was achieved in all cases; there were two fistulae and one meatal stenosis.
Sulcus
Definition:
(n.) A furrow; a groove; a fissure.
Example Sentences:
(1) A total of 63 patients (95%) showed varying degrees of hyperostosis involving the cribiform plate, planum sphenoidale, or tuberculum sellae (including the chiasmatic sulcus).
(2) Several types of neurons were differentiated on the basis of a study of neuronal activity in various parts of the cortex near the sulcus principalis during the execution of spatial delayed reactions by monkeys.
(3) It was established that the different types of neurons are represented in different numbers in different parts of the cortex near the sulcus principalis.
(4) For example, in the lightly innervated fundus of the principal sulcus (area 46), labeled fibers were primarily present in layer I and layers V-VI, whereas in area 9, the most densely innervated region, TH-labeled fibers were present in all cortical layers.
(5) Insertion of the material after careful tailoring to the individual patient's own mandibular size and configuration requires a generous posterior lower buccal sulcus incision.
(6) The average width of the ciliary sulcus is 11.1 mm, indicating that a 12.5 mm IOL is of a sufficient size to be firmly fixed in this sulcus.
(7) Pathological examination showed both haptics located in the ciliary sulcus.
(8) When the knee was in extension compared to 30 degrees flexion, the sulcus angle was greater, the lateral patellofemoral angle was smaller, there was more lateral patellar displacement, the patella tilted more laterally, and the congruence angle was directed more laterally.
(9) The populations of cells labelled following phrenic and thoracic injections overlapped, primarily at the lateral edge of the cruciate sulcus.
(10) For accurate localization of the central sulcus by cortical SEP's, the distribution of potentials must be analyzed with extensive exposure of the sensorimotor cortex.
(11) Histological findings in control specimens from 13 subjects showed parakeratinization for varying distances in the sulcus epithelium apical to the gingival crest.
(12) The area corresponding to the location of the highest concentration of GnRH-containing axons was observed to be largely avascular and separated from the vessels of the tuberoinfundibular sulcus by a "border zone" composed of glial foot processes.
(13) Gingival blood flow and temperature were monitored continuously before and after cooling via a twin probe placed in the gingival sulcus on the buccal of tooth No.
(14) Here the fornix-transected group was impaired but the group with sulcus principalis ablations was normal.
(15) A cyto- and myeloarchitectonic parcellation of the superior temporal sulcus and surrounding cortex in the rhesus monkey has been correlated with the pattern of afferent cortical connections from ipsilateral temporal, parietal and occipital lobes, studied by both silver impregnation and autoradiographic techniques.
(16) During the opening of the sulcus spiralis internus the inner supporting cells become considerably smaller, some of them undergo complete destruction by cytolysis, with pyknosis and karyorrhexis.
(17) Spirochetes appear to grow preferentially on the external surface of subgingival plaque in close contact to the gingival tissue of the deepened sulcus.
(18) The labial cleft is continued in the sulcus papillae palatinae.
(19) The anterior portion of the "cingulate corticospinal area" in the lower bank of the cingulate sulcus; 2.
(20) In the case of the suppurative reaction, pus drained along a root surface, destroying the periodontal ligament and interradicular bone until it emerged at the gingival sulcus.