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Multiple Choice

Which tissue enables aqueous humor to flow from the anterior chamber into Schlemm's canal?

Aqueous humor drains mainly through the trabecular meshwork into Schlemm's canal. The trabecular meshwork is a porous, sieve-like tissue at the angle between the iris and cornea, organized into layers that allow fluid to move from the anterior chamber into Schlemm's canal. The juxtacanalicular portion adjacent to Schlemm's canal provides the main resistance to outflow, helping regulate intraocular pressure. From Schlemm's canal, the fluid proceeds into collector channels and the venous system. Tenon's fascia is just surrounding tissue, not part of the drainage pathway; the canal of Schlemm is the channel the fluid enters after passing the meshwork, and stroma is general connective tissue not specific to this outflow route.

Aqueous humor drains mainly through the trabecular meshwork into Schlemm's canal. The trabecular meshwork is a porous, sieve-like tissue at the angle between the iris and cornea, organized into layers that allow fluid to move from the anterior chamber into Schlemm's canal. The juxtacanalicular portion adjacent to Schlemm's canal provides the main resistance to outflow, helping regulate intraocular pressure. From Schlemm's canal, the fluid proceeds into collector channels and the venous system. Tenon's fascia is just surrounding tissue, not part of the drainage pathway; the canal of Schlemm is the channel the fluid enters after passing the meshwork, and stroma is general connective tissue not specific to this outflow route.