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 brain’s size.

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

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 brain.

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 meaning: 1. a gap where the surface of a structure is folded, for example in the brain 2. a gap where the…. Learn more.

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

The central sulcus forms the border between the frontal lobe and parietal lobe. The lateral sulcus is often called the lateral fissure or Sylvian fissure. As the name implies, it’s probably the most prominent …

So what is the brain's surface called a sulcus? Sulcus is the patterned grooves or furrows on the brain’s cerebral cortex that increase the brain's size and separate the lobes and irregular-shaped ridges of …

Nov 1, 2025 · Borrowed from Latin sulcus (“a furrow made by a plow”). Doublet of sullow ("plough").