*Gyrus(gyri)-is a ridge on the cerebral cortex. Folds on the brain material. Many ridges called convolutions, or gyri, or gyrus, separated by grooves, mark the cerebrum's surface. *Sulcus(sulci)- shallow grooves on the brain.Generally, a shallow to somewhat deep groove is called a sulcus, or sulci, and a very deep groove is called a fissure.1  2 cerebral hemispheres:olds on the brain material. Many ridges called convolutions, or gyri, or gyrus, separated by grooves, mark the cerebrum's surface. *Sulcus(sulci)- shallow grooves on the brain. Generally, a shallow to somewhat deep groove is called a sulcus, or sulci, and a very deep groove is called a fissure. 1  2 cerebral hemispheres:
Most common pointing device on a notebook? The most common now is the touch pad. Prior to the touch pad, a stick pointer that looked much like a pencil eraser was more common; but the touch pad became more popular. Making the world better, one answer at a time.
The Fitbit Alta is the company's best looking device to date, and it's a real head turner. While we've often said that devices with screens can't be alluring, the Alta with its big range of colours straps does a fine job.