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 b ...
of the
human brain
The human brain is the central organ (anatomy), 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 act ...
. (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, is more of a region in the
frontal gyrus 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 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