BMSP 2135 Chapter Notes - Chapter 7.2: Maxillary Sinus, Ethmoid Bone, Sphenoid Bone
7 Jan 2019
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Describe the location, structural features, and functions of each of the cranial bones and the main sutures that unite them. 4 single bones: frontal, occipital, ethmoid, and sphenoid bones. 2 paired bones: temporal and parietal bones facial bones =14 paired: maxillary, zygomatic, nasal, lacrimal,palatine, and inferior nasal conchal bones unpaired: mandible and vomer. Other small cavities sense organ for hearing and balance. Anterior and lateral walls formed by maxillae and mandible. *has no bony floor, its floor is made of soft tissue (including muscle and connective tissue) Posterior wall =formed by the sphenoid body and pterygoid processes. Lateral walls =formed by ethmoid bone, the perpendicular plate of the palatine bones, the inferior nasal conchae, and the maxilla. Roof and floor =formed by the cribriform plate of the ethmoid bone. cavity"s floor is the hard palate, which is composed of the palatine bones and the palatine processes of the maxillae. Anterior wall= formed by nasal bones and maxillae.
