Muscles of Suboccipital region

Question 1

Rectus Capitis Posterior major

Answer 1

O: C2 (spinous processes0
I: Occipital bone (inferior nuchal line, middle third)
N: C1 (posterior ramus - suboccipital n.)
A: Bilateral: Extends head
Unilateral: Rotates head to same side

Question 2

Rectus Capitis posterior minor

Answer 2

O: C1 (posterior tubercle)
I: Occipital bone (inferior nuchal line, inner third)
N: C1 (posterior ramus - suboccipital n.)
A: Bilateral: Extends head
Unilateral: Rotates head to same side

Question 3

Obliquus capitis superior

Answer 3

O: C1 (transverse process)
I: Occipital bone (inferior nuchal line, middle third, above rectus capitis posterior major)
N: C1 (posterior ramus-suboccipital n.)
A: Bilateral: Extends head
Unilateral: Tilts head to same side, rotates to opposite side

Question 4

Obliquus capitis inferior

Answer 4

O: C2 (spinous process)
I: C1 (transverse process)
N: C1 (posterior ramus - suboccipital n)
A: Bilateral: Extends head
    Unilateral: Rotates head to same side