What is the Basioccipital bone?
Medical Definition of basioccipital (Entry 1 of 2) : relating to or being a bone in the base of the cranium immediately in front of the foramen magnum that is represented in humans by the basilar process of the occipital bone.
Where is the Occipitomastoid suture?
The occipitotemporal or occipitomastoid suture is the obliquely oriented articulation of the anterior border of the squamous occipital bone and the mastoid portion of the temporal bone. A mastoid foramen is occasionally located near or in it.
What is pars Basilaris?
Description. The basilar part (Pars basilaris) is an uneven part of the occipital, on its ventral side, that surround the foramen magnum, through which the cranial cavity communicates with the vertebral canal with the two lateral parts (Partes laterales), also called exooccipitals.
What is Spheno-occipital joint?
The spheno-occipital synchondrosis is the joint between the basal portions of the sphenoid and occipital bones in that portion of the skull base usually designated as the clivus. The articulation is similar to the cartilaginous junction between the epiphyses and metaphyses of long bones.
Where is the Lambdoidal suture?
The lambdoid suture is made up of dense, fibrous connective tissue. It is located at the back of the skull, and its function is to connect the occipital bone with the two parietal bones. It is continuous with the occipitomastoid suture, which connects the occipital bone with the temporal bones.
What is the function of occipitomastoid suture?
What is the asterion?
The asterion is an anatomical landmark on the lateral aspect of the skull formed at the junction of the occipital bone, the temporal bone, and the parietal bone.
What is the squamosal suture?
The squamosal suture is one of the lateral minor skull sutures, separating the parietal and squamous temporal bones. While the phenotypic appearances and sequelae of synostosis of the major cranial vault sutures are well documented, little is reported concerning synostosis of the squamosal suture (SQS).
What is a Forame?
The foramen is the bony hollow archway created by pedicles of adjacent vertebrae, creating a passageway through which all spinal nerve roots run. As a spinal nerve branches from the spinal cord, it exits through this opening and travels to organs, muscles and sensory structures of the body.
Where is the Intermaxillary suture?
The right and left halves of the maxilla are irregularly shaped bones that fuse together in the middle of the skull, below the nose, in an area known as the intermaxillary suture. The maxilla is a major bone of the face.
What is the spheno-occipital suture?
Definition of spheno-occipital suture : the junction between the basisphenoid and basioccipital bones of the mammalian skull that in man is usually closed by the age of 25
What suture joins the occipital bone to the parietal bone?
The lambdoid suture joins the occipital bone to the parietal bones . The occipitomastoid suture joins the occipital bone and mastoid portion of the temporal bone . The sphenobasilar suture joins the basilar part of the occipital bone and the back of the sphenoid bone body .
What is the difference between the basioccipital and the supraoccipitals?
The basioccipital lies in front of the opening, the two exoccipital condyles lie to either side, and the larger supraoccipital lies to the posterior, and forms at least part of the rear of the cranium. In many bony fish and amphibians, the supraoccipital is never ossified, and remains as cartilage throughout life.
What is the basilar of the occipital bone?
The basilar part of the occipital bone (also basioccipital) extends forward and upward from the foramen magnum, and presents in front an area more or less quadrilateral in outline. In the young skull this area is rough and uneven, and is joined to the body of the sphenoid by a plate of cartilage.