Suboccipital triangle

Question 1

Alanto-occipital joint
-articulating surfaces
-movement

Answer 1

1. superior articular surfaces of atlas and occipital condyles
2. head nod on vertebral column

Question 2

Atlanto-axial joint
-articulating surfaces
-ligaments
-movement

Answer 2

1. anterior arch of atlas and dens (odontoid process of axis)
2. Transverse: holds dens in place
   -alar: runs from dens to occipital bones (wings)
3. head rotation

Question 3

Suboccipital muscles

Answer 3

-innervated by posterior ramus (dorsal rami) of C1 or subocciptial nerve
1. rectus capitis posterior minor
2. rectus capitis posterior major
3. obliquus capitis superior
4. obliquus capitis inferior

Question 4

Suboccipital triangle

Answer 4

Borders:
-rectus capitis posterior major
-obliquus capitis superior
obliquus capitis inferior
Contents:
-suboccipital nerve
-vertebral artery

Question 5

what does the vertebral artery supply and where does it run through

Answer 5

-travels from the thorax through the transverse foramen of the cervical vertebra through the foramen magnum
-supplies the posterior region of the brain