Actions of extraocular muscles

Nerve and muscle	Primary action	Secondary action	Tertiary action
Cranial nerve III
Superior rectus	Elevation (maximal on lateral gaze)	Intorsion	Adduction
Inferior rectus	Depression (maximal on lateral gaze)	Extorsion	Adduction
Medial rectus	Adduction	None	None
Inferior oblique	Excyclotorsion	Elevation (maximal on medial gaze)	Abduction
Cranial nerve IV
Superior oblique	Incyclotorsion	Depression (maximal on medial gaze)	Abduction
Cranial nerve VI
Lateral rectus	Abduction	None	None

Actions_extraocular_muscles.htm

Graphic 72952 Version 1.0

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