Assertion: mastoid process's portion | /r/HasProperty | the mastoid foramen
Facets:
Source sentences:
text: This portion is perforated and includes the mastoid foramen, an opening that allows a vein to access the transverse sinus (the area on each side of the head that drains blood from the back of the head) as well as an artery that provides oxygenated blood to the layer of tissue tasked with protecting the brain (dura mater).
text: This portion is perforated and includes the mastoid foramen, an opening that allows a vein to access the transverse sinus (the area on each side of the head that drains blood from the back of the head) as well as an artery that provides oxygenated blood to the layer of tissue tasked with protecting the brain (dura mater).