Adduction and Depression

Description

Adduction has already occurred. The medial rectus muscle has caused the eyeball to look medially, where its axis is in line with the superior and inferior oblique muscles. During clinical testing, the superior oblique muscle depresses the eye when it is already adducted. The superior oblique is innervated by CN IV (trochlear nerve). Based on 3D models from BodyParts3D, © 2008 Database Center for Life Science licensed by CC display - Share Alike 2.1 Japan, available at: http://lifesciencedb.jp/bp3d/