Parietal foramen
Encyclopedia
At the back part of the parietal bone
and close to the upper or sagittal border is the parietal foramen, which transmits the parietal emissary vein
which anastamoses with the superior sagittal sinus
, and sometimes a small branch of the occipital artery
; it is not constantly present, and its size varies considerably.
Parietal bone
The parietal bones are bones in the human skull which, when joined together, form the sides and roof of the cranium. Each bone is roughly quadrilateral in form, and has two surfaces, four borders, and four angles. It is named from the Latin pariet-, wall....
and close to the upper or sagittal border is the parietal foramen, which transmits the parietal emissary vein
Vein
In the circulatory system, veins are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart...
which anastamoses with the superior sagittal sinus
Superior sagittal sinus
The superior sagittal sinus , within the human head, is an unpaired area along the attached margin of falx cerebri. It allows blood to drain from the lateral aspects of anterior cerebral hemispheres to the confluence of sinuses...
, and sometimes a small branch of the occipital artery
Occipital artery
The occipital artery arises from the external carotid artery opposite the facial artery, its path is below the posterior belly of digastric to the occipital region. This artery supplies blood to the back of the scalp and sterno-mastoid muscles...
; it is not constantly present, and its size varies considerably.