Axis (anatomy) The condition, where the dens is separated from the body of the axis, is called os odontoideum, and may cause nerve and circulation compression syndrome. On its anterior surface is an oval or nearly circular facet for articulation with that on the anterior arch of the atlas. On the back of the neck, and frequently extending on to its lateral surfaces, is a shallow groove for the transverse atlantal ligament which retains the process in position. The apex is pointed, and gives attachment to the apical odontoid ligament; below the apex the process is somewhat enlarged, and presents on either
The Bones "Beenkeragh Ridge" is considered as "intimidating hill-walking conditions", along with the nearby The Big Gun ridge, and is often climbed as part of the "Coomloughra Horseshoe". The Bones is often confused with "The Bone", the north-west spur of the nearby Maolan Bui , MountainViews Online Database reported that to avoid confusion in rescue situations, the Kerry Mountain Rescue ("KMR"), and the Ordnance Survey Ireland ("OSI") advocated for the official name of The Bones to become Na Cnámha on OSI maps. The Bones is the 321st-highest mountain peak in Britain and Ireland on the Simm classification. The Bones is regarded by