A sulcus is a shallow groove that surrounds a gyrus or part of a gyrus. A fissure is a deeper furrow that divides the brain into lobes, and also into the two hemispheres as the longitudinal fissure. [4]

May 7, 2025 · Sulci (singular: sulcus) are the grooves or furrows that separate the gyri. This pattern of folds increases the brain’s surface area, packing in more neurons without increasing …

Nov 9, 2025 · Explore the anatomical meaning of a sulcus, the grooves and furrows on the brain's surface. Understand its role in increasing surface area and defining functional regions.

Fissures or grooves in the surface of the cortex are called sulci (singular, sulcus; Latin, “furrow, groove, ditch, trench”). Deep grooves are called fissures.

The meaning of SULCUS is furrow, groove; especially : a shallow furrow on the surface of the brain separating adjacent convolutions.

ciliary sulcus A groove situated between the posterior root of the iris and the ciliary body. It may be used, sometimes, as a site of fixation of an intraocular lens implant.

SULCUS definition: a furrow or groove. See examples of sulcus used in a sentence.

A palpable nodule or a hard irregular gland with loss of the median sulcus raises the suspicion of cancer.

Aug 23, 2025 · A sulcus, in biology and anatomy, refers to a furrow, groove, or indentation. This term describes a depression found across various anatomical structures, not solely within the …

The sulcus is defined here as a volumetric region on the cortical mantle between adjacent gyri separated from them at the levels of their gyral white matter crest lines. Consequently, the …