suboccipital triangle

Question 1

what is this

Answer 1

rectus capitis posterior minor
think about name,
origin: attaches to posterior tubercle of c1
insertion: on back of skull, on midline
action: Extension of the head
innervation : sub occipital nerve (posterior ramps of C1)

Question 2

what is this

Answer 2

rectus capitis superior major
Origin: spinous process of axis
insertion: lateral part of inferior nuchal line of occipital bone
action: extension and rotation of head
innervation : sub occipital nerve ( posterior ramps of C1)

Question 3

what is this

Answer 3

obliquus capitis inferior

origin: spinous process of C2
insertion: transverse process of C1
action: extension and rotation of head
innervation: suboccipital nerve (posterior ramps of C1)

Question 4

what is this

Answer 4

obliquus capitis superior

origin: transverse process of C1
insertion: occipital bone, between superior and inferior nuchal lines
action: extensions of head
innervation: suboccipital nerve (posterior ramus of C1)