Basilar part of occipital bone
|Bone: Basilar part of occipital bone|
|Occipital bone at birth.|
|Occipital bone. Outer surface.|
|Latin||pars basilaris ossis occipitalis|
|Gray's||subject #31 132|
In the young skull this area is rough and uneven, and is joined to the body of the sphenoid by a plate of cartilage.
By the twenty-fifth year this cartilaginous plate is ossified, and the occipital and sphenoid form a continuous bone.
The upper surface presents a broad, shallow groove which inclines upward and forward from the foramen magnum; it supports the medulla oblongata, and near the margin of the foramen magnum gives attachment to the membrana tectoria.
On the lateral margins of this surface are faint grooves for the inferior petrosal sinuses.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. Template:Skull