Which of the following bones is NOT typically considered part of the orbital group?

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Multiple Choice

Which of the following bones is NOT typically considered part of the orbital group?

The orbit is formed by a set of bones that contribute to its walls and margins. Among these, the frontal bone forms the roof, the zygomatic bone contributes to the lateral wall (and part of the floor in some views), the maxilla helps form the floor and medial wall, the ethmoid and lacrimal bones contribute to the medial wall, the palatine bone adds a small portion to the floor, and the sphenoid bone forms the posterior wall and supports the optic canal. The parietal bone, however, sits in the cranial vault away from the orbital margins and does not participate in shaping the orbital cavity, so it’s not considered part of the orbital bone group.

The orbit is formed by a set of bones that contribute to its walls and margins. Among these, the frontal bone forms the roof, the zygomatic bone contributes to the lateral wall (and part of the floor in some views), the maxilla helps form the floor and medial wall, the ethmoid and lacrimal bones contribute to the medial wall, the palatine bone adds a small portion to the floor, and the sphenoid bone forms the posterior wall and supports the optic canal. The parietal bone, however, sits in the cranial vault away from the orbital margins and does not participate in shaping the orbital cavity, so it’s not considered part of the orbital bone group.

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