Question

which of the following statements regarding the eye muscles is not true?
a rectus muscles pull in a straight line.
b strabismus occurs when there is a weakness in one of the eye muscles.
c oblique muscles pull on an angle.
d there are four eye muscles for each eye.

Explanation:

• Rectus muscles (superior, inferior, medial, lateral) pull in a straight - line fashion.
• Oblique muscles (superior and inferior) pull at an angle.
• Strabismus (cross - eye or wall - eye) can occur due to muscle weakness.
• Each eye has six extra - ocular muscles (four rectus and two oblique), not four.

Answer:

D. There are four eye muscles for each eye.