inferior oblique muscle inferior oblique muscle the inferior oblique muscle or obliquus oculi inferior is a thin, narrow muscle placed near the anterior margin of the floor of the orbit. the inferior oblique is one of the extraocular muscles, and is attached to the maxillary bone (origin) and the posterior, inferior, lateral surface of the eye (insertion). the inferior oblique is innervated by the inferior branch of the oculomotor nerve. for other muscles called "oblique", see oblique muscle. inferior obliquerectus muscles: 2 = superior, 3 = inferior, 4 = medial, 5 = lateraloblique muscles: 6 = superior, 8 = inferiorother muscle: 9 = levator palpebrae superiorisother structures: 1 = annulus of zinn, 7 = trochlea, 10 = superior tarsus, 11 = sclera, 12 = optic nervesagittal section of right orbital cavity.detailsoriginorbital surface of the maxilla, lateral to the lacrimal grooveinsertionlaterally onto the eyeball, deep to the lateral rectus, by a short flat tendonarteryophthalmic arterynerveoculomotor nerveactionsextorsion, elevation, abductionidentifierslatinmusculus obliquus inferior bulbita98a15.2.07.019ta22051fma49040anatomical terms of muscle structure