A sulcus is a depression or fissure in the surface of the brain.
The ridges and furrows in the cerebral cortex are actually folds. The 'furrows' are called sulci and the 'bumps' are called gyri.
The "furrows" are called sulcisulcus-(singular) /sul·cus/ (sul´kus) pl. sul´ci[L.] a groove, trench, or furrow; in anatomy, a general term for such a depression, especially one on the brain surface, separating the gyri.
A groove in the brain is called a sulcus. Sulci are the small grooves or furrows between the folds of the brain, known as gyri, and help to increase the surface area of the brain for more neurons to reside.
Sulci are the shallow grooves or furrows on the surface of the brain, while gyri are the raised ridges between these grooves. Together, they increase the surface area of the brain, allowing for more complex cognitive processing and functions.
a rototiller
The folds in the cerebral cortex are called sulci (singular: sulcus) and gyri (singular: gyrus). Sulci are the grooves or furrows, while gyri are the ridges or bumps on the brain's surface. These folds increase the surface area of the brain, allowing for more neurons to be packed within the limited space of the skull.
Tiny grooves cut into the soil are called furrows. These furrows can help channel water for irrigation or drainage, prevent soil erosion, or facilitate seed placement during planting.
open ambulacral grooves
If we didn't have wrinkles, our brains would be the size of a pillowcase. As brains grow, they fold in on themselves. It's said as you learn, your brain gets more wrinkles. I don't know if it's true, though.
The vertical grooves in a column are called fluting. They are decorative channels or furrows typically found running vertically along the shaft of a column.
People dug furrows to make it a long narrow groove.
It depends on what kind of furrow. Deep furrows are typically just a side effect of tillage operations. Medium furrows can be used for irrigation or guiding a farm implement. Shallow furrows might be used to plant seeds in, or to apply fertilizer. There are nearly as many purposes for furrows as there are types of farming.