Muscles Of The Suboccipital Triangle

Question 1

Origin: Spinous process of the axis
Insertion: Inferior nuchal line of the occipital bone
Action: extend and rotate head

Answer 1

Rectus capitis posterior major muscle

Question 2

Origin: posterior tubercle of the atlas
Insertion: medial portion of inferior nuchal line of the occipital bone

Answer 2

Rectus capitis posterior minor

Question 3

Origin: spinous process of the axis
Insertion: transverse process of the atlas
Action: extend and rotate the atlantoaxial joint

Answer 3

Obliquuus capitis inferior muscle

Question 4

Origin: Transverse process of the atlas
Insertion: occipital bone between superior and inferior nuchal lines

Answer 4

Obliquus capitis superior muscle