Inferior frontal gyrus
The inferior frontal gyrus or the lower frontal gyrus is a structure of the frontal lobe of the cerebral cortex of the human brain. It can be divided into three parts, which are in turn separated by sulci. From rostral (front ) to caudal (rear) are the orbital part, the pars triangularis and pars opercularis the. The three parts of the inferior frontal gyrus limit the lateral sulcus from above.
Pars opercularis
The name of the structure is derived from the Latin operculum from which as much as "cover" means. If the pars opercularis away in a preparation as a "cover", so you can see another large brain structure: the insular cortex, also called the insula lobe or insularis.
Pars triangularis
The name of the triangular structure is derived from the Latin and means " triangular " but what very roughly corresponds to the anatomy of the pars triangularis. The pars triangularis on the dominant hemisphere is called motoric speech center ( Broca's speech center ). It is essential for human communication, this beef damage area can lead to significant speech problems to dumbness. It receives numerous afferents from other language centers such as the Wernicke's area and the angular gyrus, which is the process of speaking of great importance.
Orbital part
The orbital part is the bony orbit on.