Inferior Rectus Muscle Location. Each of the eyes recti muscles originates from the common tendinous ring sometimes referred to as the annular tendon or annulus of Zinn This is a fibrous ring of connective tissue that surrounds the optic nerve where it connects to the orbit. Alike most of the extraocular muscles the inferior rectus muscle originates from the common tendinous ring also called the annulus of Zinn that is found in the posterior pole of the orbit encircling the margins of the optic canal.
The motor function of the inferior rectus is supplied by the oculomotor nerve. Its insertion is about 65 mm from the limbus in an arc convex side forward with the nasal side nearer the limbus. The inferior rectus muscle moves the.
There are seven extraocular muscles the levator palpebrae superioris superior rectus inferior rectus medial rectus lateral rectus inferior oblique and superior oblique.
Ad Effective Back Pain Solutions. Opposite to the superior rectus this muscle moves the eyeball downward. Anatomical relationships within the orbit. Insertion The inferior rectus inserts obliquely into the sclera below the cornea approximately 65 mm behind the corneal limbus.
