Frontal lobe

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The frontal lobe is one of the four major divisions of the cerebrum. It is the largest of the four lobes ¹.

Gross anatomy

The frontal lobe lies on the orbital plate of the frontal bone and is bound by its vertical and horizontal plates. It is the area of the cerebrum posterior to the frontal pole, anterior to the central (Rolandic) sulcus and superomedially to the lateral sulcus and temporal lobe ².

Laterally, important areas include:

precentral gyrus
- lies anterior to the ~~central~~ central sulcus and angles anterolaterally as as it moves superoinferioly
- contains theprimary motor cortex
- precentral sulcus, premotor cortex, and supplementary motor area ~~lie anteriorly~~ lie anteriorly
superior frontal gyrus
- seperated from the middle frontal gyrus by the superior frontal sulcus
middle frontal gyrus
- seperated from the inferior frontal gyrus by the inferior frontal sulcus
inferior frontal gyrus
- pars opercularis in in posterior aspect(contains Broca's area)
- pars triangularis
  - V-shaped area anteriorly used a landmark to find the pars opercularis and hence Broca's area ^{1, 2}

Medially, important areas include:

anterior cingulate gyrus
- superior to corpus callosum
orbital gyrus
gyrus rectus (straight gyrus) ^{1, 2}

Relations

anterior -: frontal bone
posterior -: central sulcus and parietal lobe
inferolaterally -: lateral sulcus and temporal lobes
inferior -: orbital plate frontal bone

Blood supply

middle cerebral artery (MCA) -: lateral frontal lobe
anterior cerebral artery (ACA) -: medial frontal lobe

Related pathology

-The frontal lobe is one of the four major divisions of the <a href="/articles/cerebrum">cerebrum</a>. It is the largest of the four lobes 1.<h4>Gross anatomy</h4>The frontal lobe lies on the orbital plate of the frontal bone and is bound by its vertical and horizontal plates. It is the area of the cerebrum posterior to the <a title="Frontal pole" href="/articles/frontal-pole">frontal pole</a>, anterior to the <a href="/articles/central-sulcus">central (Rolandic) sulcus</a> and superomedially to the <a href="/articles/sylvian-fissure">lateral sulcus</a> and <a href="/articles/temporal-lobe">temporal lobe</a> 2.Laterally, important areas include:<ul>
+The frontal lobe is one of the four major divisions of the <a href="/articles/cerebrum">cerebrum</a>. It is the largest of the four lobes 1.<h4>Gross anatomy</h4>The frontal lobe lies on the orbital plate of the frontal bone and is bound by its vertical and horizontal plates. It is the area of the cerebrum posterior to the <a href="/articles/frontal-pole">frontal pole</a>, anterior to the <a href="/articles/central-sulcus">central (Rolandic) sulcus</a> and superomedially to the <a href="/articles/sylvian-fissure">lateral sulcus</a> and <a href="/articles/temporal-lobe">temporal lobe</a> 2.Laterally, important areas include:<ul>
~~-<li>lies anterior to the central sulcus and angles anterolaterally as it moves superoinferioly</li>~~
~~-<li>contains the <a href="/articles/primary-motor-cortex">primary motor cortex</a>~~
+<li>lies anterior to the central sulcus and angles anterolaterally as it moves superoinferioly</li>
+<li>contains the <a href="/articles/primary-motor-cortex">primary motor cortex</a>
~~-<li>precentral sulcus, premotor cortex, and supplementary motor area lie anteriorly</li>~~
+<li>precentral sulcus, premotor cortex, and supplementary motor area lie anteriorly</li>
~~-<li>pars opercularis in posterior aspect (contains <a href="/articles/broca-area-1">Broca's area</a>)</li>~~
~~-<li>pars triangularis<ul><li>V-shaped area anteriorly used a landmark to find the pars opercularis and hence <a href="/articles/broca-area-1">Broca's area</a> 1, 2~~
+<li>pars opercularis in posterior aspect (contains <a href="/articles/brocas-area-2">Broca's area</a>)</li>
+<li>pars triangularis<ul><li>V-shaped area anteriorly used a landmark to find the pars opercularis and hence <a href="/articles/brocas-area-2">Broca's area</a> 1, 2
~~-<li>anterior - frontal bone</li>~~
~~-<li>posterior - central sulcus and <a href="/articles/parietal-lobe">parietal lobe</a>~~
+<li>anterior: frontal bone</li>
+<li>posterior: central sulcus and <a href="/articles/parietal-lobe">parietal lobe</a>
~~-<li>inferolaterally - lateral sulcus and temporal lobes</li>~~
~~-<li>inferior - orbital plate frontal bone</li>~~
+<li>inferolaterally: lateral sulcus and temporal lobes</li>
+<li>inferior: orbital plate frontal bone</li>
~~-<a href="/articles/middle-cerebral-artery">middle cerebral artery</a> (MCA) - lateral frontal lobe</li>~~
+<a href="/articles/middle-cerebral-artery">middle cerebral artery</a> (MCA): lateral frontal lobe</li>
~~-<a href="/articles/anterior-cerebral-artery">anterior cerebral artery</a> (ACA) - medial frontal lobe</li>~~
+<a href="/articles/anterior-cerebral-artery">anterior cerebral artery</a> (ACA): medial frontal lobe</li>

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