Extraocular muscles
There are six extraocular muscles which help in the movement of the eyeball. They are innervated by either, Occulomotor nerve, Trochlear nerver or Abducens nerve 1. Superior Rectus: • Action: Elevation, adduction and medial rotation of eyeball • Innervation: Oculomotor nerve 2. Inferior Rectus • Action: Depression, adduction and lateral rotation of eyeball • Innervation: Oculomotor nerve 3. Medial Rectus: • Action: Adduction of eyeball • Innervation: Oculomotor nerve 4. Lateral Rectus: • Action: Abduction of eyeball • Innervation: Abducens nerve 5. Superior Oblique: • Action: Depression, abduction and medial rotation of eyeball • Innervation: Trochlear nerve 6. Inferior Oblique: • Action: Elevation, abduction and lateral rotation of eyeball • Innervation: Oculomotor nerve