The ciliary body has two main functions: it produces aqueous humor, the fluid that fills the front part of the eye, and it contains the ciliary muscle, which changes the shape of the lens when the eye focuses. This makes option A correct. Options B, C, and D describe functions of other parts of the eye, such as the lens, the anterior chamber, and the retina, respectively.

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The Ciliary Body

Question 137

Multiple Choice

The ciliary body:

A) produces the aqueous humor and holds the lens in place
B) focuses light rays onto the retina
C) is the portion of the eye between the cornea and the lens and iris
D) receives images and converts images into signals sent through the optic nerve

Correct Answer: