Suboccipital Triangle

Question 1

Semispinalis capitis

Answer 1

posterior portions
of C7 – T7 vertebrae

occipital bone between superior and inferior nuchal lines

extension of head on neck; rotation of face to opposite side

dorsal rami of cervical & thoracic NN.

Question 2

Semispanilis cervicus

Answer 2

posterior aspect of T1-5 transverse processes

spines of cervical vertebrae 2-5

extension of head on neck

dorsal rami of cervical & thoracic NN.

Question 3

Obliquus capitis inferioris

Answer 3

spine of axis

transverse process of atlas

rotation of face towards ipsilateral side

dorsal ramus of C1

Question 4

Obliquus capitis superioris

Answer 4

transverse process of atlas

occipital bone between superior and inferior nuchal lines

extension of head on neck & flexion of head on neck to ipsilateral side

dorsal ramus of C1

Question 5

Rectus capiatis posterior minor

Answer 5

posterior tubercle of atlas

medial portion of inferior nuchal line of occipital bone

extension of head on neck

dorsal ramus of C1

Question 6

Rectus capitis posterior major

Answer 6

spinous process of axis

lateral portion of inferior nuchal line occipital bone

extension of head on neck

dorsal ramus of C1

Question 7

Splenius capitis

Answer 7

lower part of lig. nuchae & spines of C7 - T4 vertebrae

mastoid process & occipital bone below superior nuchal line

bilateral action: extension of head on neck; unilateral action: draw head back and rotate to ipsilateral side

dorsal rami of middle cervical NN.

Question 8

Splenius cervicus

Answer 8

spines of T 3-6 vertebrae

transverse processes of C1-3 vertebrae

bilateral action: extension of head on neck; unilateral action: draw head back
and rotate to ipsilateral side

dorsal rami of lower cervical NN.