Which bone forms part of the orbit along with the maxilla and zygoma?

• A. Mastoid
• B. Frontal bone
• C. Occipital
• D. Lacrimal bone

Answer: (B)

Understanding the bones that form the eye socket helps explain why this bone fits with the maxilla and zygoma. The orbit is a bony container built from several bones, with the frontal bone forming the roof and the superior boundary. The maxilla contributes to the floor and part of the medial wall, while the zygomatic bone helps form the lateral wall and part of the floor. Put together, these bones create the orbital frame that houses the eye. The frontal bone is the best choice here because it specifically provides the roof of the orbit, coordinating with the maxilla and zygoma to define the eye socket. The other bones listed aren’t the primary roof contributor: the mastoid and occipital are behind and at the back of the skull, and the lacrimal bone, while part of the medial wall, is not the central roof element that pairs with maxilla and zygoma.