The ciliary body has two main functions: it produces aqueous humor, which is the fluid that fills the front part of the eye and maintains intraocular pressure, and it contains the ciliary muscle, which changes the shape of the lens to focus light on the retina, effectively holding the lens in place. Choices B, C, and D describe functions of other parts of the eye, not the ciliary body.

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The Ciliary Body

Question 162

Multiple Choice

The ciliary body:

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

Correct Answer: