(n.) Any lidlike or operculiform process or part; as, the opercula of a dental follicle.
(n.) The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid.
(n.) The principal opercular bone in the upper and posterior part of the gill cover.
(n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda.
(n.) Any lid-shaped structure closing the aperture of a tube or shell.
Example Sentences:
(1) This report concerns five patients in whom slit-lamp illumination of the pseudo-operculum produced a yellow spot (shadow) on the adjacent pigment epithelium.
(2) In order to determine whether the responsiveness of neurones in the primary gustatory cortex is influenced by hunger, the activity of neurones in the gustatory cortex in the frontal operculum was recorded while macaque monkeys (Macaca fascicularis) were fed to satiety.
(3) While both the frontal operculum and left planum were always present, the right planum ranged in size from absent (10%)to larger than the left (about 10%).
(4) Patients with bilateral arachnoid cysts are usually severely disabled, presumably due to primary dysgenesis of the operculum; however, in our case no primary dysgenesis was noted and the operative result was excellent.
(5) The graft is slid under this bridge, placed onto the roughened surface of the carpus and pushed under the operculum raised at the base of the 2nd and 3rd metacarpals.
(6) In contrast, ventral area 6 is not only connected with the prefrontal cortex, but also directly with the motor cortex, the parainsular gustatory area, and with somatosensory areas in the frontal operculum.
(7) These consisted in a partial inhibition of growth and a retardation of the process of completion of the operculum as compared with control animals.
(8) Movements were evoked from four physiologically defined cortical regions: the primary face motor cortex (MI), the primary face somatosensory cortex (SI), the principal part of the cortical masticatory area (CMAp) which was located in the precentral gyrus lateral to MI, and a deep part of the cortical masticatory area (CMAd) which was located in the inferior face of the frontal operculum.
(9) At metamorphosis, both shell and operculum are lost.
(10) We find that the source of the P90m component of the evoked magnetic field lies in the finger area of the primary somatosensory cortex; the sources of the N150m and P250m are found to reside in the frontal operculum.
(11) The findings in patients with idiopathic macular hole demonstrated that the operculum was located approximately 500 micron(s) anterior to the surrounding retina and moved minimally.
(12) A great variability in the operculum form, in the number of tertial sulci situating on it, in its linear dimensions and superficial area has been stated.
(13) The operculum associated with an erupting molar tooth was excised using a laser beam.
(14) The tonicity of the opercularis muscle allows tensile forces produced by substrate vibration or other mechanical energy applied to the forelimb to be effectively transmitted to the operculum; the elasticity of the connective tissue holding the operculum in place should act to return the operculum to its original position.
(15) The latch consists of a clasp on a stalk which may act as a hinged lock when the operculum opens outward.
(16) The central gyri and rolandic operculum may be more essential than the third frontal gyri for well-articulated speech.
(17) A horseshoe-like operculum having no cilia was present at the center of the adoral ciliary zone, and the opening of the vestibulum was situated as a cleft crossing from the center to the right periphery of this zone.
(18) A cluster of trigeminal nociceptive neurons was located in the lateral sulcus on the upper bank of the frontoparietal operculum in a region bordering between cortical areas SII and 7b.
(19) All forms of lecithodendriid eggs can be differentiated from those of O. viverrini by a set of morphological features of the shell surface, the knob, the operculum, the shoulder, the shape and size.
(20) Skin isolated from the operculum of the freshwater Nile tilapia (Oreochromis niloticus) can transport Ca2+ against an ionic and electrical gradient.
Scutum
Definition:
(n.) An oblong shield made of boards or wickerwork covered with leather, with sometimes an iron rim; -- carried chiefly by the heavy-armed infantry.
(n.) A penthouse or awning.
(n.) The second and largest of the four parts forming the upper surface of a thoracic segment of an insect. It is preceded by the prescutum and followed by the scutellum. See the Illust. under Thorax.
(n.) One of the two lower valves of the operculum of a barnacle.
Example Sentences:
(1) 36.3% of the children had a residual or a recurrent cholesteatoma, 19.5% after open technique, 61.2% after a combined approach operation, 17% after atticoantrotomy and reconstruction of the scutum and 29.6% after a transcanal tympanoplasty.
(2) The structure of scutum, organs of gnathosoma and coxae, chaetotaxy of idiosoma and gnathosoma were used for differential diagnosis.
(3) The marine gastropods Acmaea (Collisella) limatula and Acmaea (Notoacmea) scutum respond to distant predatory starfish (i.e.
(4) The scutum "pseudotumor" appearance caused by incomplete pneumatization was seen frequently, and should not be mistaken for mastoiditis or an osteoma.
(5) A wide range of structures was used for species identification as follows: peculiarities of scutum, peritreme, anal valve, organs of gnathosoma, chaetotaxy and morphometrical characteristics and ratios.
(6) Reliable differences have been noted in the sizes of scutum, gnathosoma and its appendages in male and female nymphs of both species.
(7) Incidence of retraction pocket and recurrent cholesteatoma in the attic after surgery for middle ear cholesteatoma using the staged intact canal wall technique were investigated in 95 ears of 91 patients, all of which had various degrees of bone defect in the tympanic scutum.
(8) Here, the ultrastructure of sensory cells on the mantle tentacles of N. scutum is examined by transmission electron microscopy to determine if morphological types of sensory cells can be correlated with known sensory capabilities.
(9) Incidence of retraction troubles was higher in Types II and III, probably because these procedures were indicated in ears with large scutum defects.
(10) In D. niveus male and female nymphs differ in the length of II-III palpal joints and width of gnathosoma, in D. ushakovae in the length of scutum and its proportions, in the width of gnathosoma and hypostome and in the diameter of peritreme.
(11) However, injection of IVM, dimethylsulphoxide (vehicle for IVM) or distilled water through the articulation between the capitulum and scutum ('anterior injection'), did markedly reduce the wax coating and increased egg permeability.
(12) The dorsal part of the head can also be transformed into second thoracic structures (scutum) indicating that Antp indeed specifies the second thoracic segment.
(13) It resumes at the superior aspect of the external auditory canal (scutum) extending laterally along the external canal wall.
(14) (Exopalpiger) trianguliceps in 4-4 pairs of setae of the anal valve, shape of scutum, longer setae of alloscutum, more round peritreme, correlation between the length of peritreme longitudinal diameter and the length of longitudinal diameter of the anal ring, presence of auricles and shape of palps.
(15) Differences in linear sizes of scutum, gnathosoma and its appendages in male and female nymphs were determined that has made possible the identification of sex in hungry nymphs.
(16) Previous studies have indicated that the mantle margin of the gastropod mollusc Notoacmea scutum is sensitive to chemical, photic, and mechanical stimulation.
(17) He then named the company Aquascutum, from the Latin words aqua (water) and scutum (shield).
(18) The height of this bony plate was 1.5 to 3.0 mm and extended from the facial canal wall to the scutum.
(19) Defects of the anterior wall of the mastoid bowl, i.e., the posterior wall of the external auditory canal, were recognized in 105 ears in the first stage, 91 of which involved pathologic defects of the tympanic scutum caused by cholesteatoma.
(20) The transverse band of light scales on the anterior scutum is complete in Ae.