Question

you hear a sharp noise to your left causing you to shift your eyes in that direction. which muscles were responsible for your glance?
multiple choice
left eye - lateral rectus, right eye - medial rectus
left eye - medial rectus, right eye - lateral rectus
left eye and right eye - lateral rectus
left eye and right eye - medial rectus
left eye - superior oblique, right eye - inferior oblique

Explanation:

The lateral rectus muscle of the left eye moves the left eye laterally (to the left). The medial rectus muscle of the right eye moves the right eye medially (towards the nose, which also contributes to looking to the left when coordinated).

Answer:

Left eye - lateral rectus, right eye - medial rectus