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 Sulcus (neur ...

of the

human brain The human brain is the central organ (anatomy), organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activi ...

. (A gyrus is one of the prominent "bumps" or "ridges" on the

cerebral cortex The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. It is the largest site of Neuron, neural integration in the central nervous system, and plays ...

. The middle frontal gyrus, like the

inferior frontal gyrus 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 ...

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 six gyri of the frontal lobe in the brain. There are five horizontally oriented, parallel convolutions, of the frontal lobe that are aligned anterior to posterior. Three are visible on the lateral surface of the brain and two ...

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, middle an ...

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