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 …

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). …

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.

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

Jan 20, 2026 · Noun sulcus (plural sulci) (anatomy) A furrow or groove in an organ or a tissue, especially that marking the convolutions of the surface of the brain.

A sulcus is a shallow groove or furrow on the surface of the brain, marking the division between adjacent gyri (the ridges of the brain). It plays a critical role in increasing the surface area of …

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 …

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.