What is pars Basilaris?

What is pars Basilaris?

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 part of sphenoid articulates with basioccipital?

basilar part
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.

Where is the basilar suture located?

occipital bone
The suture between the occipital bone and sphenoid bone that persists until the 16th to 18th year as the anteroposterior growth center of the base of the skull; also called spheno-occipital synchondrosis.

Where is the basioccipital bone?

Human skull (Occipital bone is at bottom right). The occipital bone (/ˌɒkˈsɪpɪtəl/) is a cranial dermal bone and the main bone of the occiput (back and lower part of the skull). It is trapezoidal in shape and curved on itself like a shallow dish. The occipital bone overlies the occipital lobes of the cerebrum.

What are the 4 parts of the occipital bone?

The occipital bone is composed of four parts: squamous part: external/internal surfaces….The lower surface of the basilar part features:

  • pharyngeal tubercle: attachment to fibrous raphe of pharynx.
  • either side of middle line: longus capitis, and rectus capitis anterior.
  • anterior atlanto-occipital membrane.

What is 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.

Does the sphenoid bone move?

The movement between the sphenoid and the occiput has long been considered a primary focus in cranial therapeutics. Sutherland and later presented in books by Magoun and Upledger, the following movements occur between the sphenoid and occiput near or at the sphenobasilar junction: Flexion/Extension.

Can you feel external occipital protuberance?

The bony skull bump — known as an external occipital protuberance — is sometimes so large, you can feel it by pressing your fingers on the base of your skull.

What is Bregma?

The bregma is the midline bony landmark where the coronal and sagittal sutures meet, between the frontal and two parietal bones. It is the anterior fontanelle in the neonate and closes in the second year 2 (typically around 18 months after birth).

What bones does the right squamous suture join?

The squamous sutures connect the parietal bones to the temporal bones.

Why do I have a bone in the back of my head?

The bony growth, which is known as an “external occipital protuberance,” can be found at the back of the skull, just above the base of the neck. The role of the projection is to distribute force over a large area of the bone’s surface and it can arise at spots near ligaments, tendons, or joints.

Back To Top