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 …

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

Jul 31, 2025 · A sulcus (plural: sulci) refers to a shallow depression or groove found on the cerebral cortex. These grooves separate the raised ridges, known as gyri (singular: gyrus). …

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.

This cortical region runs mediolaterally along the posterior bank of the suprasylvian sulcus, and is distinct from adjoining areas in anatomical architecture.

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

The primary cerebral sulci, such as the central sulcus, the lateral sulcus, and the parieto-occipital sulcus, play a role in dividing the brain into four main lobes.

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

In biological morphology and anatomy, a sulcus (pl. sulci) is a furrow or fissure (Latin: fissura; pl. fissurae).