Occipito-axial joint

Question 1

What is the embryoinc derivative of the apical ligament of the dens or the apicodental ligament

Answer 1

The notocord

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 tectoria 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

The membrana tectoria or tectorial membrane
The cruciate ligament
the capsular ligament of the 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 total

18 degrees per couple

Question 6

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

Answer 6

about 50 degrees total

about 10 degrees per couple

Question 7

For the cervical spine below C2, what is the range of motion allowed for each type of joint

Answer 7

about 33 degrees total

about 6 degrees per couple