| Revision as of 19:00, 14 February 2004 editSoCal (talk | contribs)424 editsNo edit summary← Previous edit | Revision as of 19:02, 14 February 2004 edit undoSoCal (talk | contribs)424 edits imageNext edit → | ||
| Line 3: | Line 3: | ||
| === Anatomy === | === Anatomy === | ||
| ] | |||
| In the human brain, the ] separates the frontal lobe from the parietal lobe along the top of each cerebral cortex. The lateral sulcus separates the inferior frontal gyrus of lower frontal lobes from the ]s. | In the human brain, the ] separates the frontal lobe from the parietal lobe along the top of each cerebral cortex. The lateral sulcus separates the inferior frontal gyrus of lower frontal lobes from the ]s. | ||
| Line 8: | Line 9: | ||
| The frontal lobe comprises four major folds of cortical tissue: the ], ] and the ] of the ], the ]. | The frontal lobe comprises four major folds of cortical tissue: the ], ] and the ] of the ], the ]. | ||
| The precentral gyrus is in front of the central sulcus, and behind the precentral sulcus, which separates it from the frontal gyri. The superior and middle gyri are divided by the superior frontal sulcus. The frontal gyri lie above the inferior frontal gyrus, divided by the inferior frontal sulcus. |
The precentral gyrus is in front of the central sulcus, and behind the precentral sulcus, which separates it from the frontal gyri. The superior and middle gyri are divided by the superior frontal sulcus. The frontal gyri lie above the inferior frontal gyrus, divided by the inferior frontal sulcus. | ||
| === Function === | === Function === | ||
Revision as of 19:02, 14 February 2004
The frontal lobe is an area in the brains of vertebrates. Located in the front of each cerebral hemisphere, frontal lobes are positioned in front of (anterior to) the parietal lobes.
Anatomy
In the human brain, the central sulcus separates the frontal lobe from the parietal lobe along the top of each cerebral cortex. The lateral sulcus separates the inferior frontal gyrus of lower frontal lobes from the temporal lobes.
The frontal lobe comprises four major folds of cortical tissue: the precentral gyrus, superior gyrus and the middle gyrus of the frontal gyri, the inferior frontal gyrus.
The precentral gyrus is in front of the central sulcus, and behind the precentral sulcus, which separates it from the frontal gyri. The superior and middle gyri are divided by the superior frontal sulcus. The frontal gyri lie above the inferior frontal gyrus, divided by the inferior frontal sulcus.
Function
Frontal lobes assist in planning, coordinating, controlling and executing behavior.
The frontal lobes are larger in proportion to other brain areas in many phylogenetically younger vertebrates, when compared to the frontal areas of older species. More of the human brain develops as frontal lobe than in the brains of any other species, comprising the largest individual portion of the human brain.
In the human brain, the precentral gyrus and the related cortical tissue that folds into the central sulcus comprise the primary motor area, which controls movements of specific body parts associated with areas of the gyrus, and detects signals from nerves in those same body parts.