Editing Parietal bone (section)

== Borders ==
* The '''sagittal border''', the longest and thickest, is dentated (has toothlike projections) and articulates with its fellow of the opposite side, forming the [[sagittal suture]].
* The '''frontal border''' is deeply serrated, and bevelled at the expense of the outer surface above and of the inner below; it articulates with the [[frontal bone]], forming half of the [[coronal suture]]. The point where the coronal suture intersects with the sagittal suture forms a T-shape and is called the '''bregma'''.
* The '''squamous border''' is divided into three parts: of these:
** the ''anterior'' is thin and pointed, bevelled at the expense of the outer surface, and overlapped by the tip of the great wing of the sphenoid; 
** the ''middle portion'' is arched, bevelled at the expense of the outer surface, and overlapped by the squama of the temporal; 
** the ''posterior part'' is thick and serrated for articulation with the [[mastoid]] portion of the [[temporal bone|temporal]].
* The '''occipital border''', deeply denticulated (finely toothed), articulates with the [[occipital bone]], forming half of the [[lambdoid suture]]. That point where the sagittal suture intersects the lambdoid suture is called the '''[[lambda]]''', because of its resemblance to the Greek letter.
{{Gallery|File:Sagittal suture 2.jpg|Skull seen from top. [[Sagittal suture]] separates left and right parietal bone.
 |File:SchaedelSeitlichSutur1.png|[[Coronal suture]]. It separates the parietal bones and the [[frontal bone]].
 |File:SchaedelSeitlichSutur3.png|[[Squamosal suture]]. It separates the parietal bones and the [[temporal bone]].
 |File:Lambdoid suture.png|[[Lambdoid suture]]. It separates the parietal bones and the [[occipital bone]].
}}