Items tagged “cranium”

The petrosquamous fissure is the obliquely oriented fissure between the medial petrous part and lateral squamous part of the temporal bone. Gross anatomy The anterior (ventral) petrosquamous fissure is the medial continuation of the tympanosquamous fissure and petrotympanic fissure (together f...

The frontoethmoidal suture is a short cranial suture located in the anterior cranial fossa, between the orbital process of frontal and orbital plate of ethmoid bones. It forms part of the medial wall of the orbit. The anterior and posterior ethmoidal foramina are seen just superior to it, throu...

The sphenoethmoidal suture marks the osseous union between the crest of sphenoid bone and the perpendicular and cribiform plates of ethmoid bone.

The parietotemporal or parietomastoid suture represents the articulation between the parietal and temporal bones posteriorly. Anteriorly, they articulate at the squamosal suture. The parietotemporal suture is considered the most posterior continuation of squamosal suture and is at times interrup...

The sphenopetrosal (or petrosphenoidal) suture, also known as a synchondrosis or fissure, is the cranial suture connecting the greater wing of sphenoid with the petrous part of the temporal bone in the middle cranial fossa. This fissure is located immediately posterior to the foramen ovale and f...

The lacrimal bones are paired craniofacial bones forming the anterior aspect of the medial orbital walls.  Gross anatomy The lacrimal bones have two surfaces and four borders. The lateral orbital surface is divided by a vertical posterior lacrimal crest with an anterior fossa for lacrimal sac ...