Occipito-Axial Joint

Question 1

What is the embryonic derivative of the apical ligament of the dens or the apicodental ligament?

Answer 1

The Notochord

Question 2

What is the function of the alar ligament?

Answer 2

Together they function to resist axial rotation

Question 3

What forms the cranial continuation of the posterior longitudinal ligament?

Answer 3

The membrana tec toria or tectorial membrane

Question 4

List, in order the ligaments in a midsagittal plane from the dura mater at the level of the medulla oblongata to the anterior bursa of the median atlanto-axial joint?

Answer 4

Membrana Tectoria or Tectorial Membrane
Cruciate Ligament
Capsular Ligament of Posterior Bursa of the Median Atlanto-Axial Joint
Apical Ligament of the Dens or the Apicodental Ligament

Question 5

For the cervical spine below C2, what is the range of flexion-extension?

Answer 5

About 90 degrees or about 18 degrees per couple

Question 6

For cervical spine below C2, what is the range of one side lateral bending?

Answer 6

About 50 degrees or about 10 degrees per couple

Question 7

For cervical spine below C2, what is the range of one side axial rotation?

Answer 7

About 33 degrees or about 6 degrees per couple