Anatomy, Head and Neck: Eye Inferior Rectus Muscle

The inferior rectus muscle is one of the seven extraocular muscles. It is primarily responsible for depressing the eye (downgaze). The inferior rectus is one of the four rectus muscles, including the superior rectus, the medial rectus, and the lateral rectus. There are also two oblique extraocular muscles, the superior and inferior obliques. The seventh extraocular muscle is the levator palpebrae superioris.