The middle frontal gyrus makes up about one-third of the

frontal lobe The frontal lobe is the largest of the four major lobes of the brain in mammals, and is located at the front of each cerebral hemisphere (in front of the parietal lobe and the temporal lobe). It is parted from the parietal lobe by a groove be ...

of the

human brain The human brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of ...

. (A ''gyrus'' is one of the prominent "bumps" or "ridges" on the surface of the human brain.) The middle frontal gyrus, like the

inferior frontal gyrus The inferior frontal gyrus (IFG), (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 f ...

and the

superior frontal gyrus In neuroanatomy, the superior frontal gyrus (SFG, also marginal gyrus) is a gyrus – a ridge on the brain's cerebral cortex – which makes up about one third of the frontal lobe. It is bounded laterally by the superior frontal sulcus. The su ...

, is more of a region in the

frontal gyrus The frontal gyri are four gyri of the frontal lobe in the brain. These are four horizontally oriented, parallel convolutions, of the frontal lobe. The other main gyrus of the frontal lobe is the precentral gyrus which is vertically oriented, and ...

than a true gyrus. The borders of the middle frontal gyrus are the ''inferior frontal sulcus'' below; the ''superior frontal sulcus'' above; and the

precentral sulcus The precentral sulcus is a part of the human brain that lies parallel to, and in front of, the central sulcus. (A ''sulcus'' is one of the prominent grooves on the surface of the human brain.) The precentral sulcus divides the inferior, midd ...

behind.

Additional images

File:Middle frontal gyrus animation small.gif, Position of middle frontal gyrus (shown in red). File:Gray725 middle frontal gyrus.png, Left cerebral hemisphere seen from above. File:Gray726 middle frontal gyrus.png, Lateral surface of left cerebral hemisphere. File:Lateral surface - Middle frontal gyrus.png, Lateral surface of right cerebral hemisphere. Middle frontal gyrus is noted by red arrows. File:Slide2HAN.JPG, Cerebrum. Lateral view.Deep dissection. File:Slide3HAN.JPG, Cerebrum. Lateral view.Deep dissection. File:Slide4HAN.JPG, Cerebrum. Lateral view.Deep dissection. File:Rostral Middle Frontal - DK ATLAS.png, Rostral middle frontal gyrus. File:Caudal Middle Frontal - DK ATLAS.png, Caudal middle frontal gyrus. File:Middle frontal gyrus coronal sections.gif, Middle frontal gyrus highlighted in green on coronal T1 MRI images File:Middle frontal gyrus sagittal sections.gif, Middle frontal gyrus highlighted in green on sagittal T1 MRI images File:Middle frontal gyrus transversal sections.gif, Middle frontal gyrus highlighted in green on transversal T1 MRI images

References

{{DEFAULTSORT:Middle Frontal Gyrus Gyri Frontal lobe