Answer :

Final answer:

The lacrimal and nasal bones are the two most thin and fragile facial bones, with the former making up part of the inner wall of the orbit and the latter forming the bridge of the nose.

Explanation:

The two most thin and fragile facial bones are the lacrimal bones and the nasal bones. The lacrimal bones are small, thin bones that make up part of the orbit at the inner wall. Each lacrimal bone also houses the lacrimal sac, playing a crucial role in the drainage of tear fluid. On the other hand, the nasal bones are two small oblong bones that vary in size and form the bridge of the nose, providing a bony base for the cartilaginous tissues that shape our nose.