Which skull bone articulates with the first vertebra?
The occipital bone
The occipital bone forms the base of the skull at the rear of the cranium. It articulates with the first vertebra of the spinal cord and also contains the foramen magnum, the large opening of the skill through which the spinal cord passes as it enters the vertebral column.
What bone articulates with the maxilla and frontal bone?
The maxilla articulates with numerous bones: superiorly with the frontal bone, posteriorly with the sphenoid bone, palatine and lacrimal bones and ethmoid bone, medially with the nasal bone, vomer, inferior nasal concha and laterally with the zygomatic bone.
Where does the occipital bone articulate with the first cervical vertebra?
occipital condyles
The occipital condyles are where the occipital bone articulates with the first cervical vertebra.
What is the articulation between cranial bones?
Most of the bones of the skull are held together by firm, immovable fibrous joints called sutures or synarthroses. These joints allow the developing skull to grow both pre- and postnatally.
Which skull bone articulates with the first vertebra quizlet?
13. The skull bone that articulates with the first cervical vertebrae is the: a. occipital.
Does sphenoid bone articulate with maxilla?
The single sphenoid bone articulates with the maxillary bones. The superior orbital fissure is an oblique space between the lesser and greater wings of the sphenoid. It communicates the orbit anteriorly with the middle cranial fossa posteriorly. The midline body of the sphenoid contains the sphenoid sinuses.
What bone articulates with the atlas?
Articulations. Superiorly the atlas articulates with the occiput to form the Atlanto-occipital joint which allows the head to nod up and down on the vertebral column. Inferiorly the atlas articulates with the dens which acts as a pivot that allows the atlas and attached head to rotate on the axis.
Does the Dens articulate with the occipital bone?
The dens articulates with the occipital bone. Costal cartilages join most ribs to the sternum. Bones of the skull are separated by immobile joints called sutures.
How does the skull articulate with the atlas?
On the superior surface of the atlas bone are a pair of concave facets. The facets articulate with rounded condyles on the underside of the skull’s occipital bone. This junction allows the head to nod up and down.
Where does the tubercle of the rib articulate?
The rib tubercle articulates with the transverse process of a thoracic vertebra. The angle is the area of greatest rib curvature and forms the largest portion of the thoracic cage. The body (shaft) of a rib extends anteriorly and terminates at the attachment to its costal cartilage.
Why is the maxilla longer than the other skull bones?
In newborns the maxilla is horizontally much longer than vertically compared to adults. Furthermore their teeth sockets extend almost far up until the orbital ridge. As all paranasal sinuses the maxillary sinuses are relatively small and become larger during the development of the maxilla and the other skull bones.
How does the atlas bone articulate with the occipital?
On the superior surface of the atlas bone are a pair of concave facets. The facets articulate with rounded condyles on the underside of the skull’s occipital bone. This junction allows the head to nod up and down.
What is the difference between the maxilla and palatine process?
The zygomatic process of the maxilla grows laterally and meets the zygomatic bone. Lastly, the palatine process is a horizontal extension on the medial side of the bone constituting the roof of the mouth and the floor of the nasal cavity. Together with the palatine bone it forms the hard palate.
What is the superior articular facet of the skull?
Superior articular facet (Facies articularis superior) is an oval-shaped, concave structure on the superior aspect of the lateral mass. It articulates with an occipital condyle on the underside skull.