Axial Skeleton: Skull

Topics Covered

Introduction

The Skull

Major bones of the cranium

Major bones of the face

Sutures of the skull

Introduction

·      80 bones total

·      Consists of the skull, the vertebral column, the rib cage, the auditory ossicles and the hyoid bone

The Skull (Linked to figure 7.4- Anterior View of Skull)

·      22 bones joined together by sutures

·      Cranial bones surround cranial cavity

o   8 bones in contact with meninges

·      Facial bones support teeth & form nasal cavity & orbit

o   14 bones with no direct contact with brain or meninges

o   Attachment of facial & jaw muscles

The Major Bones of the Cranium

·      Parietal Bone (2)

·      Frontal Lobe (1)

·      Temporal Bone (2)

·      Ethmoid (1) (Linked to figure 7.12- Ethmoid Bone)

·      Sphenoid (1)

·      Occipital Bone (1)

Major Bones of the Face (Linked to figure 7.4- Anterior View of Skull)

·      Nasal Bones (2)

·      Zygomatic Bones (2)

·      Maxillary Bones (2)

·      Mandible (1)

·      Inferior Nasal Conchae (2)

·      Palatine Bone (2)

·      Vomer (1)

·      Lacrimal Bones (2)

Sutures (Linked to figure 7.4- Anterior View of Skull)

·      Sagittal

·      Coronal

·      Squamosal

·      Lambdoidal