Structures

  • Rectus capitis anterior
  • Rectus capitis lateralis
  • Rectus capitis posterior major
  • Rectus capitis posterior minor
  • Longus coli
  • Longus capitis

MuscleActionOriginInsertionInnervationBlood supply
Rectus capitis anterior- Flexes neck at atlanto-occipital joint- Lateral part of atlas and its transverse process- Inferior portion of basilar part of occiput- Anterior rami of C1,2- Ascending cervical artery
Rectus capitis lateralis- Side flexion of neck to same side- Superior part of transverse process of atlas- Inferior part of jugular process of occiput- Branches from anterior rami of C1, C2- Ascending cervical artery
Rectus Capitis Posterior Major- Assists with neck extension and rotation
- Postural support of head
- Spinous process of axis- Lateral aspect of inferior nuchal line of occiput- Anterior rami of C1- Vertebral artery
- Occipital artery
Rectus Capitis Posterior Minor- Assists with neck extension and rotation
- Postural support of head
- Tubercle of posterior arch of atlas- Medial aspect of ingerior nuchal line of occiput- Anterior rami of C1- Vertebral artery
- Occipital artery
Longus Colli
- Superior oblique
- Inferior oblique
- Vertical part
- Flexion of neck
- Side flexion of neck
- Weak rotation of neck to opposite side
- Superior oblique: Anterior tubercles of transverse processes of C3-5
- Inferior oblique: Anterior bodies of T1-3
- Vertical: Anterior bodies of C5-T3
- Superior oblique: Tubercle of anterior arch of atlas
- Inferior oblique: Anterior tubercles of transverse processes of C5,6
- Vertical: Anterior bodies of C2-4
- Anterior rami of C2-6- Ascending cervical artery
Longus capitis- Flexes the neck- Tendons to transverse processes of C3-6- Inferior portion of basilar part of occiput- Anterior rami of C1-3- Ascending cervical artery