Anatomy Suboccipital Triangle

Question 1

Origin and insertion of rectus capitis posterior major

Answer 1

Origin: Spinous process of C2 (axis) Insertion: Inferior nuchal line

Question 2

Innervation of the rectus capitis posterior major

Answer 2

Suboccipital nerve, dorsal ramus of C1

Question 3

Actions of rectus capitis posterior major

Answer 3

Ipsilateral rotation of head and extension

Question 4

Blood supply of rectus capitis posterior major

Answer 4

Vertebral artery, occipital artery

Question 5

Origin and insertion of obliquus capitis inferior

Answer 5

Origin: Spinous process of C2

Insertion: Transverse process of C1

Question 6

Innervation of obliquus capitis inferior

Answer 6

Suboccipital nerve

Question 7

Actions of rectus capitis inferior

Answer 7

Rotates head to ipsilateral side

Question 8

Blood supply of obliquus capitis inferior

Answer 8

Vertebral artery

Question 9

Origin and insertion of obliquus capitis superior

Answer 9

Origin: Transverse process of C1

Insertion: Inferior nuchal line

Question 10

Innvervation of obliquus capitis superior

Answer 10

Subocciptal artery

Question 11

Actions of obliquus capitis superior

Answer 11

Bilaterally: Extension of head

Unilaterally: flexion of head ipsilaterally

Question 12

Blood supply of obliquus capitis superior

Answer 12

Vertebral artery

Question 13

Origin and insertion of rectus capitis posterior minor

Answer 13

Origin: Spinous process of C1

Insertion: Inferior Nuchal Line

Question 15

Innervations of rectus capitis posterior minor

Answer 15

Suboccipital nerve

Question 16

Actions of rectus capitis posterior minor

Answer 16

Extends head at neck

Proprioception

Question 17

Blood supply of rectus capitis posterior minor

Answer 17

Vertebral Artery

Question 18

What is this?

What pierces it and then enters the skull?

Answer 18

Posterior antlooccipital membrane

Vertebral artery