Master the Biology Bash: 2025 MCAT Biological Systems Practice Challenge!

The chamber of the eye that is located at the front and filled with aqueous humor is the anterior chamber. This space is situated between the cornea and the iris, making it the most forward section of the eye. The aqueous humor is a clear fluid that is produced by the ciliary body and serves several important functions, including maintaining intraocular pressure, providing nutrients to the avascular structures of the eye (such as the lens and cornea), and facilitating the removal of metabolic wastes.

The vitreous chamber, located behind the lens and filled with a gel-like substance known as vitreous humor, does not contain aqueous humor and is not situated at the front of the eye. The posterior chamber, which lies just behind the iris and in front of the lens, is also filled with aqueous humor but is not the primary anterior region of the eye. The optic disk refers to the area on the retina where the optic nerve exits the eye—this area does not contain aqueous humor and is not a chamber of the eye.

Understanding the distinction between these various compartments of the eye helps clarify the unique roles they play in visual function and the maintenance of eye health.