Muscle Origin Insertion Action
Longis colli -- -- --
inferior oblique T1-T3 C5-C7 Bilateral: Flexion
Superior oblique C5-C7 C1 Unilateral: Lateral flexion; rotation in opposite direction
vertical part T1-T3; C5-C7 C2-C4 --
Longus capitis C3-C6 base of occipital bone Bilateral:flexion of neck; unilateral:lateral flexion and rotation to same side
Rectus capitis anterior transverse process of C1 Inferior bass of occipital bone Bilateral:flexion of neck
Rectus capitis lateralis supeior part of transverse process inferior surface of jugular process of occipital bone Unilateral:lateral flexion of neck
Rectus capitis posterior major spinous process of C2 lateral part of base of occipital bone Bilateral:extension of neck; Unilateral:rotation to the same side
Rectus capitis posterior minor posterior arch of C1 Medial part of base of occipital bone Bilateral:extension
Obliquus Capitis superior transverse process of C1 Between superior and inferior line of occipital bone Extension of hea; lateral flexion of head and neck
Obliquus capitis inferior spinous process of C2 Inferior dorsal part of transverse process of C1 Rotates C! to same side
Intertransversarii C1-T1; T10-L5 inferior part of transverse process to superior part of vertebrae directly below; running on both sides refer to origin Unilateral: lateral flexion
Interspinalis C2-T2; L1-sacrum; spinous process of adjacent vertebrae refer to origin extension
Rotators longus C1-sacrum; transverse process of vertebrae spinous proceess of second vertebrae above Unilateral:rotation of spine in opposite direction; Bilateral: extension of spine
Rotatores brevis transverse process of vertebrae spinous process of vertebrae directly above Unilateral:rotation of spine in opposite direction; Bilateral: extension
Multifidus transverse process of L1-L5; T1-T10/ sacrum and iliac crest; articular process of C4-C7 Spinous process of all vertebrae except atlas Unilateral: lateral flexion; rotation in opposite direction; Bilateral: extension