What does the dens of the axis articulate with?
One of the most prominent features of the axis bone is a superior, tooth-like projection called the odontoid process (or dens). articulates with the anterior arch of the atlas bone, where they form a pivot joint.
What does the dens attach to?
The dens (odontoid process) of the axis exists as a superior projection from the C2 vertebral body and is conical in shape and serves as an attachment site for the transverse, apical, and alar ligaments [1-2].
Where is the dens of vertebrae?
The odontoid process, or dens, is a superior projecting bony element from the second cervical vertebrae (C2, or the axis). The first cervical vertebrae (atlas) rotates around the odontoid process to provide the largest single component of lateral rotation of the cervical spine.
Where does the axis articulate with the skull?
Atlas bone
Introduction to the Atlas bone anatomy: 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. Directly below the atlas bone is the axis bone (C2).
What is the dens of the axis?
Description. The odontoid process (also dens or odontoid peg) is a protuberance (process or projection) of the Axis (second cervical vertebra). It exhibits a slight constriction or neck, where it joins the main body of the vertebra.
Is the dens posterior or anterior?
Clinically Relevant Anatomy The C2 vertebra, also known as the axis, is one of three atypical vertebrae. The axis shows a peg-like odontoid process that projects itself superiorly from the body. The odontoid process lies anterior to the spinal cord and is used as the pivot for the rotation of the head.
Is dens anterior or posterior?
The dens or odontoid process exhibits a slight constriction or neck, where it joins the body. On its anterior surface is an oval or nearly circular facet for articulation with that on the anterior arch of the atlas.
What are dens of axis?
Which bone articulates with the dens quizlet?
Correct. The prominent projection known as dens on the axis forms a pivot joint with the atlas, allowing the atlas to rotate around the axis. The axis is a very sensible name for C2 since it serves as a central axis for rotation of the atlas. Identify the region of the skull that articulates with the atlas.
Which bone articulates with the dens C2?
The axis (C2 vertebra) has the upward projecting dens, which articulates with the anterior arch of the atlas.
Are dens posterior?
Gross anatomy The axis is formed by a body with the attached dens, two lateral masses, a posterior neural arch (formed by the pedicle and a thick lamina), and a large spinous process, which is commonly bifid.
Where in the skeleton is the ulna located in reference to the humerus quizlet?
Where in the skeleton is the ulna located in reference to the humerus? The ulna is a bone in the forearm which is distal to the humerus in the upper arm. The humerus makes up the upper arm. Identify the primary region of the ulna that forms the hinge joint with the humerus.