A sulcus (pronounced with a hard c) (pl. sulci) is a depression or fissure in the surface of an organ, especially the brain.

Examples of sulci

In the brain

See Sulcus (neuroanatomy)

Elsewhere

• sulcus arteriæ vertebralis
• sagittal sulcus
• sigmoid sulcus
• tympanic sulcus
• lacrimal sulcus (sulcus lacrimalis)
• sulcus tubae auditivae
• radial sulcus (musculospiral groove)
• preauricular sulcus
• malleolar sulcus
• Calcaneal sulcus
• Intermammary sulcus
• interlabial sulci
• Anterior interventricular sulcus
• Posterior interventricular sulcus
• urethral sulcus, in the baculum

See also

• Fissure

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