Tags: Anatomical Structure, Muscle.
For the abdominal muscle see: Abdominal external oblique muscleThe superior oblique muscle or obliquus oculi superior is a fusiform muscle originating in the upper medial side of the orbit (i.e. from beside the nose) which abducts depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).
