Fissure Intraparietal

The intraparietal groove (lat. sulcus intraparietalis) is a groove in the parietal lobe of the brain that connects the lower surfaces of the occipital lobe, parietal and temporal lobes, as well as separating them.

The groove runs from the midline to the outer edge of the hemisphere and continues upward to the lateral corner of the occipital lobe. It is a continuation of the interparietal sulcus.

On the surface of the hemisphere, the groove forms an arcuate line, which passes into the midline at the level of the upper edge of the parietal lobe. On the medial side, the groove separates the inferior surface of the temporal lobe from the inferior surface of the parietal lobe; on the lateral side, it separates the inferior surface of the parietal lobe from the outer surface of the occipital and parietal lobes.

The groove contains fibers connecting the outer part of the occipital lobe with the anterior part of the parietal lobe, as well as fibers connecting the posterior part of the parietal lobe with the posterior part of the temporal lobe.

The inner parietal groove is a variant of the cavity of the parietal shell of the brain, its lateral part. In fact, it occupies the entire frontoparietal lobe of the brain, both from its upper part and from its lower, middle part. The width of the grooves inside the deep parietal does not exceed a centimeter. This groove is important for several reasons:

1. First of all, this groove is needed to separate the body of the anterior flexor of the tongue and the posterior outer region of the superior frontal gyrus. There are also statements that for the function responsible for the production of individual sounds. To do this, you need more tension in the muscles than is necessary during their general contraction. This assumption is based on some research. Although in general it is believed that all these sounds, or most of them, are pronounced as a result of contraction of the muscles that lower the tongue downwards, which comes from the front 2/

The intraparietal fissure is a continuation of the acute fissure on both the superolateral and inferior surfaces of the hemisphere, and is mainly found on the right. As a result of the development of this groove, the superior sagittal sinus decreases.

All features of the Intratelian furrow are noticeable when examining the skull, which is carried out using radiography, computed tomography and magnetic resonance imaging. An important addition in the diagnosis and differentiation of this groove from the sagittal sinus is cerebral angiography and computed tomography. Described macroscopically in 1869 by Pierre P. Broca.

Widely used in ophthalmology to study the anterior orbit. It enters the superior orbital fissure on both sides and reaches the posterolateral edge of the superior orbital fissure and passes into the anterior section of the upper edge of the orbit.