One of the air chambers within the ethmoid bone.
The intricate network of interconnected air-filled cavities positioned alongside the nasal passages and in close proximity to the eyes is commonly known as the paired labyrinth. This labyrinth serves as a complex system of channels and chambers, facilitating the flow of air and maintaining a delicate balance between the nose and the eyes.
Air-filled spaces within the ethmoid bone located at the posterior part of the nose.