What's the difference between opercula and opercular?
Opercula
Definition:
(n. pl.) See Operculum.
(pl. ) of Operculum
Example Sentences:
(1) Five fish with lateral lines cut at the opercula were unable to school when wearing opaque eye covers.
(2) were found and they had no embryos and indistinct opercula.
(3) Opercula of permanent first and second molars delayed in eruption were investigated histologically to detect possible causes of eruption failure.
(4) Ventilatory adaptations involved a reduction in rate in air and the mode of ventilation changed from flow-through to tidal, with closed opercula.
(5) Morphological changes of the superficial vessels of the cerebral convexity reflect the developmental alterations of the cerebral structures, particularly those of the opercula and cerebral sulci.
(6) It can be used to remove redundant tissue to gain access for tooth preparation, develop a gingival trough around the margins of a prepared tooth for an accurate impression, control hemorrhage, remove opercula, and plane and reshape tissue of an edentulous area for the construction of a hygienic and esthetic pontic.
(7) Its expression prevails in the areas surrounding the Sylvian fossa (opercula).
(8) It consists of four to six gyri that appear like a fan covered by the frontal, parietal, and temporal opercula.
(9) Owing to the development of the opercula and resultant depression of the insula, after seven months of gestation the middle cerebral artery and its branches, begin to differentiate into the vallecular (related to the sylvian vallecula or fronto-temporal notch), insular (related to the insular cortex), opercular (related to the frontal, parietal and temporal opercula) and convexity segments (related to the convex side of the hemisphere).
(10) The opercula of many species possess a muscular process on which the muscle inserts, thereby increasing the moment arm through which the muscle acts.
(11) Common manifestations include a smooth cerebral surface and absent opercula that may lend a figure-eight appearance to the brain and smooth subsurface lines that represent abnormal cortical layers or an abnormal white-gray interface.
(12) The two layers are normally separated by a space except where they form opercula in the center of ostioles (exits for excysting amebae).
(13) At the end of the contraction phase, the final adduction of the opercula results in a positive pressure in the opercular cavities.
(14) Nematodes larvae occurred within the liver capsule and N. scombri occurred within nodules in the opercula.
(15) After 10-11 wk of feeding, gross lesions including scoliosis, deformed opercula, scale deformities, scale loss, spongiosis of epidermal cells and scale regeneration were observed in 20% of the fish fed diets containing 13.4% leucine.
(16) Marked atrophy of the operculae was found in all Korsakoff patients and in 3 out of 5 chronic alcoholics.
(17) At irregular intervals in the cyst wall ostioles occupied by opercula are present.
(18) Posterior vitreous detachment was absent in 61% of these eyes; opacities interpreted as opercula were found in 78 eyes (60%).
(19) Protrusion is accompanied by depression of the hyoid apparatus and adduction of the opercula.
(20) Usually definite retinal breaks can be found near the equator and these are round or oval in appearance and without opercula.
Opercular
Definition:
(n.) The principal opercular bone or operculum of fishes.
Example Sentences:
(1) Cytoarchitectonic evaluation of the perisylvian cortex in the three cases examined in detail indicated that labeled areas included the ventral premotor cortex (area 6V); the precentral opercular and orbitofrontal opercular areas (PrCO and OFO); the second somatosensory area (S-II); the opercular cortex immediately anterior to S-II, possibly corresponding to area 2 of the S-I complex; and the central part of the insular cortex, including portions of the granular and dysgranular insular fields (Ig, Idg).
(2) If this pressure persisted until the start of the expansion, it would make the opercular suction pump inoperative, because it would blow away the flexible opercular flap which, as a passive valve, seals the widening opercular slit during abduction.
(3) Four different types of parietal opercular sulcus topography were recognized.
(4) The second contraction of the filament adductor muscles, at the end of the expansion phase, occurs when the opercular flap separates from the body of the fish, opening the opercular slit.
(5) Computed tomography revealed small brain with widened subarachnoid space, smooth surface of the brain, uniformly enlarged ventricles, wide sylvian cisterns, and lack of insular opercularization.
(6) Fronto-opercular and insular cortices of Japanese macaques were histochemically stained for cytochrome oxidase activity.
(7) In contrast, chloride cells of freshwater-adapted fish were not, or only faintly, stained both in gills and opercular epithelium.
(8) In a patient with clinical manifestations suggestive of brain malformation, computer-assisted tomography (CT) showed lissencephaly: agyria, pachygyria, absent opercularization, and colpocephaly.
(9) Because the integrated records of opercular movements only give an arbitrary estimate of changes in ventilation rate, direct measurements of the ventilation volume were performed in order to state the way of the dominant action of CO2.
(10) The primary findings consist of (1) a cerebral surface that is agyric or agyric with pachygyric areas, (2) a cerebral contour that is oval or "hourglass" due to lack of or incomplete opercularization of the brain, and (3) an abnormal gray-white-matter distribution in the cerebral hemispheres.
(11) Gills and opercular epithelia of the killifish (Fundulus heteroclitus) homogenized and incubated with radiolabeled arachidonic acid were found to produce prostaglandins, leukotrienes, and hydroxyeicosatetraenoic acids.
(12) The effect of atriopeptin II (ANF) on the in vitro opercular epithelium was investigated by use of short-circuit current techniques.
(13) It was suggested that spinothalamic input could be relayed to both postcentral and opercular cortices.
(14) The respiratory apparatus, as in other teleosts, is driven by bilaterally symmetrical alternating buccal pressure and opercular suction pumps.
(15) One patient had left frontal macrogyria; the other had bilateral opercular polymicrogyria.
(16) Isolated opercular epithelia of killifish (Fundulus heteroclitus) were mounted in an Ussing chamber.
(17) The spongy change was distributed through the cerebral cortex bilaterally and diffusely, but the left hemisphere was involved more severely and extensively than the right hemisphere, and the opercular portions of the frontal and temporal lobes were affected more than the remainder of those lobes.
(18) Glyptothorax pectinopterus has a well defined bilateral adhesive organ situated posteriorly to the mouth, between the opercular opening and the base of the pectoral fin.
(19) Nevertheless, inflow of water through the opercular slit is negligible, because flow reversal is counteracted by the kinetic energy of the normal water flow from the buccal to the opercular cavities.
(20) Golgi studies revealed significant differences in dendritic patterns between neurons of the left and right opercular regions of the frontal lobe (Broca's speech area on the dominant side) and between cells of the left and right precentral areas (the orofacial motor zones) just behind.