inferior rectus muscle inferior rectus muscle the inferior rectus muscle is a muscle in the orbit near the eye. it is one of the four recti muscles in the group of extraocular muscles. it originates from the common tendinous ring, and inserts into the anteroinferior surface of the eye. it depresses the eye (downwards). inferior rectusthe inferior rectus muscle, is shown in this superior view of the eye, along with its axis of rotation. the other muscle is the superior oblique muscle, which angles around the trochlea.detailsorigincommon tendinous ring at the orbital apexinsertion6.8 mm inferior to the corneal limbusarteryinferior muscular branch of the ophthalmic artery, infraorbital arteryveininferior muscular branch of the ophthalmic veinnerveinferior branch of oculomotor nerveactionsdepression and adductionidentifierslatinmusculus rectus inferior bulbita98a15.2.07.011ta22043fma49036anatomical terms of muscle structure