Final answer:
The statement is true; the ethmoid bone articulates with the maxillary bone as part of the orbit's medial wall but is classified as a cranial bone, not a facial bone.
Step-by-step explanation:
The statement is true: although the ethmoid bone articulates with the maxillary bone to form part of the medial wall of the orbit, the ethmoid bone is not a facial bone. It is, in fact, considered a cranial bone. This single, midline bone contributes to several vital structures within the skull. It forms part of the roof and the upper, lateral walls of the nasal cavity, a portion of the floor of the anterior cranial fossa, the upper portion of the nasal septum, and the medial wall of the orbit. Despite its association with facial structures like the orbit and the nasal cavity, the ethmoid bone is classified with brain-case bones, which are part of the cranium.