Question

the atl

2020SPO (N) Human Anatomy (ANA-2070-02, BIO-2070-02) Take Test: Cartmill Chapter 2 QUESTION 7 The atlas (C1): Lacks a vertebral body Only articulates with the axis (C2) at the dens Forms the joint on which the skull rotates Flexes and extends on the C2 due to the laxity of the transverse ligament None of the above 1 points QUESTION 8 Click Save and submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save an

the atlas (c1)

a. lacks a vertebral body

b. only articulates with the axis (c2) at the dens

c. forms the joint on which the skull rotates

d. flexes and extents on the c2 due to the laxity of the trasverse ligament

e. none of the above

Answer 1

Answer: The atlas lacks a vertebral body.

Explanantion: The vertebral foramen extends into the area where other vertebras have their body in case of atlas vertebrae. Atlas articulates with axis to form atlanto-axial joint which is a complex joint in which the posterior surface of the anterior arch of atlas articulates with the front of the odontoid process of the axis along with articulation at the dens. The skull rotates on both atlas and axis. The function of transverse ligament is to prevent the anterior displacement of the odontoid process.