Muscles of Suboccipital region Flashcards
Rectus Capitis Posterior major
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
Rectus Capitis posterior minor
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
Obliquus capitis superior
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
Obliquus capitis inferior
O: C2 (spinous process) I: C1 (transverse process) N: C1 (posterior ramus - suboccipital n) A: Bilateral: Extends head Unilateral: Rotates head to same side