BRAIN
CRANIAL NERVES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -The sulci (singular-Sulcus) are the bumps or folds, or fissures on the brain. The gyri (singular-gyrus) are the ridges or grooves, or gaps between the sulci. Sulci and gyri are seen on the cerebrum part of the brain. The cerebellum has parts named anterior lobe, posterior lobe, and the flocculonodular lobe.
Detailed explanation-2: -The surface of the cerebral cortex is highly convoluted with folds (gyri), separate from each other by elongated grooves (sulci). These convolutions allow for the expansion of the cortical surface area without increasing the size of the brain.
Detailed explanation-3: -In humans, the lobes of the brain are divided by a number of bumps and grooves. These are known as gyri (bumps) and sulci (groves or fissures). The folding of the brain, and the resulting gyri and sulci, increases its surface area and enables more cerebral cortex matter to fit inside the skull.