The Four Rectus Muscles and Two Oblique Muscles

Question

The four rectus muscles and two oblique muscles
A) determine pupillary size.
B) move the eyeball.
C) are innervated by CNs III, IV, and VI.
D) More than one of the above are true.

Accepted Answer

The rectus and oblique muscles are responsible for moving the eyeball and are innervated by the cranial nerves III (oculomotor), IV (trochlear), and VI (abducens), making option D correct as it indicates that more than one of the statements are true.