Which cranial nerves are involved in eye movements? Select all that apply.
Explanation & Rationale
A) Trochlear: The trochlear nerve (CN IV) is responsible for innervating the superior oblique muscle, which helps control the downward and inward movement of the eye. B) Optic: The optic nerve (CN II) is primarily involved in vision and visual acuity, not in the movement of the eye. It transmits visual information from the retina to the brain. C) Oculomotor: The oculomotor nerve (CN III) controls most of the extraocular muscles, including those responsible for eye movement (superior rectus, inferior rectus, medial rectus, and inferior oblique) and also controls pupil constriction. D) Abducens: The abducens nerve (CN VI) controls the lateral rectus muscle, which is responsible for the outward movement of the eye. E) Facial: The facial nerve (CN VII) controls the muscles of facial expression and is not involved in eye movements.