Back تلفيف جبهي سفلي Arabic Circumvolució frontal inferior Catalan Gyrus frontalis inferior German Giro frontal inferior Spanish Gyrus frontal inférieur French הפיתול המצחי התחתון HE Circonvoluzione frontale inferiore Italian 下前頭回 Japanese Gyrus frontalis inferior Dutch Giro frontal inferior Portuguese
| Inferior frontal gyrus | |
|---|---|
 Inferior frontal gyrus of the human brain, gyrus frontalis inferior. | |
 Lateral surface of left hemisphere viewed from the side. Inferior frontal gyrus shown in yellow. | |
| Details | |
| Part of | Frontal lobe |
| Parts | Pars opercularis, pars triangularis, pars orbitalis |
| Artery | Middle cerebral |
| Identifiers | |
| Latin | gyrus frontalis inferior |
| NeuroNames | 85 |
| NeuroLex ID | birnlex_873 |
| TA98 | A14.1.09.113 A15.2.07.058 |
| TA2 | 5447 |
| FMA | 61860 |
| Anatomical terms of neuroanatomy | |
The inferior frontal gyrus (IFG; also gyrus frontalis inferior) is the lowest positioned gyrus of the frontal gyri, of the frontal lobe, and is part of the prefrontal cortex.
Its superior border is the inferior frontal sulcus (which divides it from the middle frontal gyrus), its inferior border is the lateral sulcus (which divides it from the superior temporal gyrus) and its posterior border is the inferior precentral sulcus. Above it is the middle frontal gyrus, behind it is the precentral gyrus.[1]
The inferior frontal gyrus contains Broca's area, which is involved in language processing and speech production.
- ^ Nolte (2002), The Human Brain, Mosby, ISBN 978-0-323-01320-8 photos on p526 & p.546