Table of Contents
- 1 Which vertebrae has odontoid process?
- 2 Does C1 have odontoid process?
- 3 What is the odontoid process called?
- 4 Is the odontoid process anterior or posterior?
- 5 Where is the alar ligaments located?
- 6 What is the function of the odontoid process?
- 7 Is the odontoid process the dens?
- 8 What is the odontoid process and where is it located quizlet?
Which vertebrae has odontoid process?
The Odontoid process is a projection of the axis, a second cervical vertebra, and joins the main body of the vertebra. So, the correct answer is, ”Second cervical vertebra of mammal”.
Does C1 have odontoid process?
C1 serves as a ring or washer that the skull rests upon and articulates in a pivot joint with the dens or odontoid process of C2. Approximately 50% of flexion extension of the neck happens between the occiput and C1; 50% of the rotation of the neck happens between C1 and C2.
What holds odontoid process in place?
Now we’ll look at the ligaments which hold the odontoid process in place, making it the stable pivot round which rotation of the head occurs. The transverse ligament is attached on each side to these two tubercles on the atlas. The transverse ligament prevents the odontoid process from being displaced backwards.
What is the odontoid process called?
Dens. The dens, also called the odontoid process or the peg, is the most pronounced projecting feature of the axis. The dens exhibits a slight constriction where it joins the main body of the vertebra.
Is the odontoid process anterior or posterior?
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.
Where did the odontoid process come from developmentally?
Developmentally, the tip or apex of the dens is derived from a distinct secondary ossification center (cuneiform cartilage), whereas the remainder of the dens arises from laterally located primary ossification centers (Figure 5) [1, 14].
Where is the alar ligaments located?
The alar ligaments join the lateral margins of the sloping upper posterior margin of the dens of C2 to the lateral margins of the foramen magnum (adjacent to the occipital condyles) and lie on either side of the apical ligament. They may be oblique or vertical and are thickest at the occipital attachment.
What is the function of the odontoid process?
The odontoid process lies anterior to the spinal cord and is used as the pivot for the rotation of the head. The C1 vertebra, carrying the cranium, rotates on this. The craniovertebral joint between the atlas and the axis is called, the atlanto-axial joint.
Why is it called odontoid process?
The dens itself is often referred to as the odontoid process or odontoid peg. These terms better reflect the embryological derivation of the dens and simplify communication between clinicians regarding fractures or pathology of this part of the C2 vertebra.
Is the odontoid process the dens?
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.
What is the odontoid process and where is it located quizlet?
the second cervical vertebra, has a strong conical process arising from the upper surface of its body. This process, called the dens or odontoid process, is received into the anterior portion of the atlantal ring to act as the pivot or body for the atlas.