Corpus: Parietal lobe
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Synonyms: Lobus parietalis, parietal lobe, parietal cortex, parietal brain
English:
Definition[Bearbeiten]
The parietal lobe is an anatomical part of the cerebrum (telencephalon) that lies behind the frontal lobe.
Anatomy[Bearbeiten]
The topographical area of the parietal lobe is delimited by the following structures:
- anterior: sulcus centralis
- posterior: parietooccipital sulcus and preoccipital incisura
- inferior: lateral sulcus (Sylvian fissure)
A distinction is made between an anterior (cortex parietalis anterior) and a posterior parietal cortex (cortex parietalis posterior). The primary somatosensory cortex is located in the anterior part of the parietal lobe in the postcentral gyrus - directly behind the central sulcus. This is where the posterior cord and the pain pathway end.
The intraparietal sulcus, which runs within the lobe, divides the posterior part of the parietal lobe into an upper (superior parietal lobe) and a lower (inferior parietal lobe) parietal lobe. The supramarginal gyrus is located at the upper end of the lateral sulcus. The angular gyrus is located dorsal to the supramarginal gyrus.
Blood supply[Bearbeiten]
The parietal lobe is supplied ventrally and laterally by the middle cerebral artery. The convexity is supplied with blood by the anterior cerebral artery.