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sulcus Definition

sul·cus (sulkəs)

noun pl. -·ci-sī

  1. a groove or furrow
  2. Anat. any of the shallow grooves separating the convolutions of the brain

Etymology: L: see sulcate

sulcus Usage Examples

Preposition: of

  • frog: Thrush produces a foul smelling black discharge in the affected sulcus of the frog.

Adjective modifier

  • intraparietal: A contrast of the segregated percept minus the fused percept showed parietal and occipital activation on the bank of the right intraparietal sulcus.
  • superior: There is a small soft tissue density closely applied to the upper mediastinum on the right, in the superior sulcus.
  • central: The central sulcus ( CS ) was identified by somatosensory evoked potential ( SEP ) phase reversal.
  • right: A contrast of the segregated percept minus the fused percept showed parietal and occipital activation on the bank of the right intraparietal sulcus.

Modifies a noun

  • terminalis: A V-shaped line, the sulcus terminalis, divides the tongue into an anterior 2/3 and a posterior 1/3.
  • depth: Probing will reveal a sulcus depth greater than the normal.

Noun used with modifier

  • gingival: Top J Junctional epithelium - the epithelium which seals the base of the gingival sulcus against the tooth.

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