Answer
In the embryonic growth and differentiation of the brain folds, and groves are formed ;
Work Step by Step
The following are the anatomic names for these structures:
Folds are called gyr ( sing. gyrus).
Shallow groves are called sulci (singular, sulcus)
Deep groves are called fissures
Examples of gyri (folds) are the precentral gyrus, and the postcentral gyrus: they contain the primary motor cortex, and the primary somatosensory cortex respectively. The central sulcus separates the frontal from the parietal lobe, and the lateral sulcus lies between the frontal and temporal lobes. The major fissure is the longitudinal fissure which divides the cerebrum into right and left hemispheres.. The transverse fissure is the second deepest groove of the brain, it is located between cerebrum and cerebellum..
