<prompt> The weakest wall of the human orbit isRoofMedial wallFloorLateral wall  <response>: Each orbit resembles a four-sided pyramid on one side. The four walls of the orbit are: roof, floor, lateral and medial walls. The medial wall is very thin. From before backward, it is formed by a The frontal process of the maxilla; b the lacrimal bone; c the orbital plate of the ethmoid; and d the body of the sphenoid bone. 