innervated by innervated_by has muscle origin has muscle origin has muscle insertion has muscle insertion trochlear nerve superior oblique extraocular muscle dorsal oblique extraocular muscle M. obliquus superior FMA:49039 dorsal oblique extraocular muscles The superior oblique muscle, or obliquus oculi superior, is a fusiform muscle in the upper, medial side of the orbit whose primary action is downward, lateral rotation of the eye. One of the extraocular muscles, the superior oblique is the only muscle innervated by the trochlear nerve (the fourth cranial nerve). NCIT:C33688 Wikipedia:Superior_oblique_muscle superior oblique UBERON:0006321 AAO:0010119 musculus obliquus superior SCTID:181155005 obliquus oculi superior obliquus superior superior oblique muscle ZFA:0000738 MA:0001277 TAO:0000738 VHOG:0001131 oblique extraocular muscle eyeball of camera-type eye common tendinous ring