Orbital lamina of ethmoid bone / Lamina papyracea :- Its name lamina papyracea is an appropriate description, as this part of the "Ethmoid" bone is paper-thin and fractures easily. A fracture here could cause entrapment of the "Medial rectus muscle". 【 Maxilla do not articulate with Sphenoid bone 】
Fig. 62. The occipital bone (top view): 1 - a large wing of the sphenoid bone; 2 - a small wing of the sphenoid bone; 3 - visual channel, 4 - hill sella; 5 - occipital occipital bone; 6 - the upper orbital fissure; 7 - a round hole; 8 - foramen ovale; 9 - a large hole; 10 - spinous hole
This exhibit depicts the anatomy of the inferior skull including: the foramen magnum, occipital condyles, mastoid process, styloid process, mandibular fossa, palatine bone, sphenoid bone, carotid canal, and the jugular fossa.
Sphenoid bone - The sphenoid bone is an unpaired bone of the neurocranium. It is situated in the middle of the skull towards the front, in front of the temporal bone and basilar part of the occipital bone. The sphenoid bone is one of the seven bones that articulate to form the orbit. Its shape somewhat resembles that of a butterfly or bat with its wings extended.