Suboccipital Triangle Muscles

Question 1

Rectus Capitus Posterior Minor

Answer 1

Proximal- posterior tubercle of C1

Distal- medial 1/3 inferior nuchal line

Innervation- sub occipital nerve (post rami of C1)

Action- extend head on C1; rotate head & C1 on C2 vertebrae

Question 2

Rectus Capitis posterior major

Answer 2

Proximal- spinous process of C2

Distal- lateral inferior nuchal line

Innervation- sub occipital nerve (post rami of C1

Action- extend head on C1; rotate head and C1 on C2 vertebrae

Question 3

Obliquus Capitis Inferior

Answer 3

Proximal- spinous process of C2

Distal- transverse process of C1

Innervation- sub occipital nerve (posterior rami of C1)

Action- extends head on C1; rotates head & C1 on C2

Question 4

Obliquus Capitis Superior

Answer 4

Proximal- transverse process of C1

Distal- b/w superior & inferior nuchal lines

Innervation- sub occipital nerve (post rami of C1)

Action- extends head on C1; rotates head & C1 on C2