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sulcus

sulcus

1 9.9
A narrow groove on the surface of a body part, often seen on the brain
  • noun
  • /ˈsʌlkəs/
  • Specialized
translation icon : surco
  • Between 16 and 20 weeks, the facial nerve, arterioles, venules, and the stapedius muscle lie in a sulcus on the canalicular wall.
  • annular sulcus
  • gingivobuccal sulcus
  • superior temporal sulcus

Examples

  • Oroscopy identified a bulge in the right upper gingival-labial sulcus.

    Academic text (2005)
  • Incise the subcutaneous layer close to and parallel to the sulcus to create a window.

    Academic text (2009)
  • A little bit of a one goes down into a sulcus, and those sulci are labeled by the lines.

  • The fistula extends from the floor of the nose to the gingivobuccal sulcus under the upper lip.

    Academic text (2001)
  • Trauma to the right parieto-occipital sulcus and parietal lobe.

  • Then it extends cephalad in the sulcus between the internal surface of the mandible and the anterior tonsillar pillar.

    Academic text (1999)
  • Figure 1. At presentation, the patient exhibits left enophthalmos, deepening of the superior orbital sulcus, loss of the lower-eyelid fat, and malar depression.

    Academic text (2008)
  • Our technique provides adequate bulk while allowing for the depth of a ventral sulcus that will minimize tethering of the tongue and reduce oral incompetence by creating a neovestibule.

    Academic text (2010)
  • After opening the joint capsule, the positioning sleeve was gently inserted into the femoral sulcus, up to the tibial guide wire insertion point, and a 3.2-mm guide wire was drilled into it.

    Academic text (2018)
  • The central sulcus separates the frontal and parietal lobes of the brain.

Synonyms

scissure
vssulcus
  • Specialized
9.9

A long narrow crack in rock or a part of the body

is narrower and mainly located on the brain surface marking convolutions

Compounds

calcarine sulcus
  • Specialized
9.9

Deep groove on the inner back part of the brain that contains the main area for vision

central sulcus
  • Specialized
6.5

A deep groove on the brain surface that separates the front and top parts

9.3

A deep fold in the brain that separates the front and side parts

9.9

A deep groove near the back of the brain that separates the parietal lobe from the occipital lobe

sulcus centralis
  • Specialized
7.5

A deep groove on the side of the brain that separates the front part from the upper middle part

9.7

A deep groove on the side of the brain that separates the frontal lobe from the temporal lobe

How Deep

fissure
22 7.0
to cleft
  • Archaic
1 6.3
sulcus
  • Specialized
1 9.9
groove
41 3.7

Surface Forms

sulcus singular
sulci plural

Etymology

Sulcus comes from the Latin word sulcus, which means 'groove' or 'furrow', like the line a plow makes in a field. So, in anatomy a sulcus is a narrow groove on the surface of an organ, such as the brain.