Skull Structure

Skull Bones

All skull bones are united in adults by immoveable joints called Sutures, except the mandible (lower jaw bone)

Cranial Bones (cranium)

Single Bones—Frontal, Occipital, Ethmoid, Sphenoid

Paired Bones—Temporal, Parieta

Facial Bones

Single Bones—Mandible, Vomer

Paired Bones—Maxilla, Zygomatic, Nasal, Lacrimal, Palatine, Inferior Nasal Concha

Cranial Cavity

Surrounds the brain with a superior

Cranial Vault (Calvaria) and an Inferior Cranial Base

The Anterior, Middle, and Posterior Cranial Fossae (indentations) in the cranial base support the brain

Orbits

contain the eyeballs

Nasal Cavity

houses the sensory receptors for smell

Oral Cavity

Surround the teeth and tongue

Paranasal Sinuses

Air-filled, membrane-lined spaces

Includes other small cavities that house the sense organs for hearing and balance

Cranial Bones Frontal-Occipital

Cranial Bones Temporal

Cranial Bones Sphenoid-Ethmoid

Facial Bones Nasal-Mandible

Facial Bones Maxillae-Vomer

Anterior View of the Skull

Lateral View of the Skull

Posterior, Superior, and Inferior Views of the Skull

Medial View of Midsagittal Section of the Skull

Internal View of the Skull