Parieto-occipital sulcus Definition
It is a sulcus or deep fissure located close to the posterior end of each brain hemisphere. It is also known as Parietooccipital fissure.
In Latin, the structure is known as Sulcus parietooccipitalis or Fissura parietooccipitalis.
Parieto-occipital sulcus Location
It is positioned on the medial surface of the layer of unmyelinated neurons known as the cerebral cortex. Only a small section of this structure is noted on the lateral side of the brain hemisphere. It mainly rests on the medial surface. The medial section of the sulcus passes down and ahead as a deep cleft over the medial hemisphere surface. It attaches itself to the calcarine fissure located underneath and posterior to the rear end of the corpus callosum. The lateral section of the sulcus is located 5 cm before the occipital pole of the brain hemisphere. It is approximately 1.25 cm long.
Parieto-occipital sulcus Function
It separates the occipital and the parietal lobes in both hemispheres of the brain. It also acts as a division between the precuneus and the cuneus.
Parieto-occipital sulcus Pictures
Get an idea about the appearance of this fissure with the aid of these useful images.
Picture 1 – Parieto-occipital sulcus
Picture 2 – Parieto-occipital sulcus Image