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Encyclopedia > Postcentral gyrus
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The lateral postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. It is almost the same as Brodmann areas 3, 1 and 2. The parietal lobe is a lobe in the brain. ... Jump to: navigation, search In the anatomy of animals, the brain, or encephalon, is the higher, supervisory center of the nervous system. ... A Brodmann area is a region in the brain cortex defined by its cytoarchitectonic characteristics. ...

Contents


Postcentral Gyrus

Postcentral gyrus of the human brain.
Postcentral gyrus of the human brain.

The lateral postcentral gyrus is bounded by: Jump to: navigation, search Image File history File links Postcentral_gyrus. ... Jump to: navigation, search Image File history File links Postcentral_gyrus. ...

It is the location of primary somatosensory cortex, the main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space called a homunculus in this location. For the primary somatosensory cortex, this is called the sensory homunculus. See a somewhat fanciful and highly schematic representation of the sensory homunculus at lower right. The medial longitudinal fissure is the deep groove which separates the two hemispheres of the vertebrate brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Central sulcus of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Postcentral sulcus of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... Lateral sulcus The lateral sulcus (also called Sylvian fissure or lateral fissure) is one of the most prominent structures of the human brain. ... In human and zoological anatomy (sometimes called zootomy), several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... The primary sensory areas are the main cerebral areas that receive sensory information from thalamic nerve projections. ... Jump to: navigation, search Hartsoekers homunculus The concept of a homunculus (Latin for little man, sometimes spelled homonculus) is often used to illustrate the functioning of a system. ... The primary sensory areas are the main cerebral areas that receive sensory information from thalamic nerve projections. ...


Brodmann Areas 3, 1 and 2

Brodmann areas 3, 1 and 2 of human brain. Brodmann area 3 is in red, area 1 in green, and area 2 in yellow.
Brodmann areas 3, 1 and 2 of human brain. Brodmann area 3 is in red, area 1 in green, and area 2 in yellow.

Brodmann areas 3, 1 and 2 comprise the primary somatosensory cortex of the human brain. Because Brodmann sliced the brain somewhat obliquely, he encountered area 1 first; however, from rostral to caudal the Brodmann designations are 3, 1 and 2, respectively. Jump to: navigation, search Image File history File links Ba1_2_3. ... Jump to: navigation, search Image File history File links Ba1_2_3. ... The somatosensory system is the sensory system of somatic sensation. ... Jump to: navigation, search Cortex (Latin for bark) has different meanings, depending on the context: In neuroanatomy: the cerebral cortex (often simply called cortex) is the thin wrinkled outermost layer of the brain. ... Jump to: navigation, search In the anatomy of animals, the brain, or encephalon, is the higher, supervisory center of the nervous system. ... Korbinian Brodmann (November 17, 1868 - August 22, 1918) was a German neurologist who became famous for his definition of the cerebral cortex into 52 distinct regions from their cytoarchitectonic (histological) characteristics. ... Jump to: navigation, search In the anatomy of animals, the brain, or encephalon, is the higher, supervisory center of the nervous system. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ... A Brodmann area is a region in the brain cortex defined by its cytoarchitectonic characteristics. ...

Sensory homunculus of the human brain.
Sensory homunculus of the human brain.

This area of cortex, as shown by Wilder Penfield and others, has the pattern of a homunculus. That is, the legs and trunk fold over the midline; the arms and hands are along the middle of the area shown here; and the face is near the bottom of the figure. While it is not well-shown here, the lips and hands are enlarged on a proper homunculus, since a large number of neurons in the cerebral cortex are devoted to processing information from these areas. Image File history File links Sensory homunculus in the human brain. ... Image File history File links Sensory homunculus in the human brain. ... Wilder Graves Penfield (January 25/26, 1891 - April 5, 1976) was a American-born Canadian neurosurgeon. ... Jump to: navigation, search Hartsoekers homunculus The concept of a homunculus (Latin for little man, sometimes spelled homonculus) is often used to illustrate the functioning of a system. ... Jump to: navigation, search Neurons (also spelled neurones or called nerve cells) are the primary cells of the nervous system. ... Jump to: navigation, search Location of the Cerebral cortex Slice of the Cerebral cortex, ca. ...


These areas contain cells that project to the secondary somatosensory cortex. Jump to: navigation, search Brodmann area 40, or BA40, is part of the parietal cortex in the human brain. ...


External Sources

  • BrainInfo for Neuroanatomy area 1, area 2, and area 3.

See also


  Results from FactBites:
 
Cerebral Hemispheres (1889 words)
The gyri of the lateral surface of the parietal lobe are the postcentral gyrus, and the superior and inferior parietal lobules.
This inferior parietal lobule is composed of the ANGULAR GYRUS and the SUPRAMARGINAL GYRUS.
Inferior to the calcarine sulcus is the LINGUAL gyrus.
Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 1. Head and Neck (460 words)
The central (rolandic) sulcus (15) separates the precentral gyrus (16) of the frontal lobe from the postcentral gyrus (14) of the parietal lobe.
The postcentral gyrus (14) is the primary somatosensory (somesthetic) cortex.
On the medial surface of the parietal lobe is the precuneus gyrus (9).
  More results at FactBites »

 
 

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