GROSS ANATOMY

Detailed explanation-1: -Although the bone of the medial orbital wall is thinnest, followed by the bone of the floor of the orbit, in actuality the medial wall is strengthened by the perpendicular septa of the ethmoid sinuses.

Detailed explanation-2: -The orbits are symmetrical paired structures separated by the nasal cavity and paranasal sinuses. Seven bones form each orbit: frontal, sphenoid, maxillary, zygomatic, palatine, ethmoid, and lacrimal. The orbital roof is formed by the lesser wing of the sphenoid bone and the frontal bone.

Detailed explanation-3: -The lacrimal bone is a paired facial bone located in the medial wall of the orbit. Its main function is to provide support to the structures of the lacrimal apparatus, which secretes tears to lubricate the eyes, as well as act as a site for orbicularis oculi muscle attachment.

Detailed explanation-4: -The orbit appears as a quadrangular pyramidal cavern in the upper face. It is made up of four facial bones and three cranial bones: maxilla, zygomatic bone, lacrimal bone, palatine bone, frontal bone, ethmoid bone, and sphenoid bone.