What's the difference between sulci and sulcus?

Sulci


Definition:

  • (pl. ) of Sulcus

Example Sentences:

  • (1) The glial mantle is thicker in the sulci than on the gyri.
  • (2) It has been found, that increased transparency of the areas below cerebral ependyma, the lack of cerebral cortex sulci, and imaging of the temporal horns together with internal hydrocephalus in CT scans indicate an active process and are indications to shunting.
  • (3) It was present throughout the full length of the median eminence and occupied the entire width between the tuberoinfundibular sulci.
  • (4) The hemorrhagic foci located close to the depth of the cortical sulci very often destroyed the cortex and white matter, and penetrated to the subarachnoid space (141 cases).
  • (5) Generalized enlargement of the cortical sulci and ventricles (pattern C) probably reflected atrophic changes from the chronic human immunodeficiency virus infection and prolonged debilitating illness.
  • (6) On the lateral side, label is found within the presylvian sulcus, suprasylvian gyrus and adjacent lateral and suprasylvian sulci, and posterior ectosylvian gyrus.
  • (7) CSF spaces (sylvian fissures, temporal lobe sulci, temporal horns, third ventricle, lateral ventricles, and superficial cerebral sulci) were visually assessed with the magnetic resonance imaging rating protocol of the Consortium to Establish a Registry for Alzheimer's Disease (CERAD).
  • (8) Volume enhancement was effective in most cases, there being a significant reduction in the degree of recession of the prosthesis and the depth of the unsightly sunken sulci of the upper and lower lids.
  • (9) Among them, 97 (23.4%) patients showed the appearance of TSAH in the Sylvian fissures, tentorium cerebelli, cortical sulci, basal cisterns and interhemispheric fissures.
  • (10) Three such patients were found to have small, symmetric ventricles and minimal sulci on tomography; these CT scans were considered "hypernormal" for the patients' ages and clinical syndromes.
  • (11) In the cephalic region of the median eminence, it was concentrated bilaterally in longitudinal bands located dorsal to the tuberoinfundibular sulci.
  • (12) However, the cortical architecture of the Ammon's horn, arterial boundary zones and depths and sides of sulci was not involved.
  • (13) More caudally, near the junction of the infundibulum with the brain, GnRH accumulated over the apex of the tuberoinfundibular sulci, with several foci being scattered from this region medially to the ependyma of the third ventricle.
  • (14) Spinal fluid pressure was 0 mmH2O, and CT scan revealed wide cortical sulci and ventricles.
  • (15) The CT scans of six subjects (20%) differed considerably from the others as they displayed wide cortical or vermian sulci at the borderline of normal variations.
  • (16) After injections into the central lateral nucleus, label is present on the lateral side within the presylvian sulcus, in most of the suprasylvian gyrus, including the adjacent lateral and suprasylvian sulci, and in the posterior corner of the ectosylvian gyrus.
  • (17) The position of the stimulation coil (11.6 cm outer diameter, Novametrix) was recorded by constructing individual grids on the skull surface using extracranial bony landmarks and was then related to underlying cerebral sulci by analysis of magnetic resonance images of the brain and skull.
  • (18) A big part of the macroscopical investigations (pattern of sulci, relations between bodyweight and brainweight on the one hand and surface of neocortex on the other hand) already had been realized by HAARMANN and OBOUSSIER (1972).
  • (19) Structural abnormalities of the brain, particularly ventricular enlargement and prominence of cortical sulci, have been documented reliably in CT scan investigations of chronic schizophrenic patients.
  • (20) The degree of cerebral atrophy was visually estimated and also calculated using different ventricular diameters and the mean width of four cortical sulci.

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.

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