Bones of head and neck

BonesOfHead & Neck

* Prof. Dr. Motaz Shieban Oncology Surgeon, General Surgeon Teacher of Anatomy & Surgery

Sutures

Sutures – Immovable joints that join skull bones togetherForm boundaries between skull bonesFour sutures:Coronal – between parietal and frontalSagittal– between parietal bonesLambdoid – between the parietal and occipitalSquamous – between the parietal and temporalFontanels – usually ossify by 2 years of age

Frontal (Coronal)

Sagittal
Squamous
Lambdoid
Sutures


skull = 22 bones cranium = 8 bones: frontal, occipital, 2 temporals, 2 parietals, sphenoid and ethmoid facial bones = 14 bones: nasals, maxillae, zygomatics, mandible, lacrimals, palatines, inferior nasal conchae, vomer.
skull forms a larger cranial cavity -also forms the nasal cavity, the orbits, paranasal sinuses mandible and auditory ossicles are the only movable skull bones cranial bones also: attach to membranes called meninges -stabilize positions of the brain, blood vessels -outer surface provides large areas for muscle attachment that move the head or provide facial expressions
The Adult Skull



Frontal
Parietal
Temporal
Zygoma
Nasal
Vomer
Maxilla
Mandible
Frontal View

Frontal

Nasal
Zygoma
Maxilla
Mandible
Parietal
Sphenoid
Temporal
Occipital
External Auditory Meatus
Mastoid Process
Lateral View

14 Facial Bones

Nasal (2) Maxillae (2) Zygomatic (2) Mandible (1) Lacrimal (2) Palatine (2) Inferior nasal conchae (2) Vomer (1)

Sectional Anatomy of the Skull

Paranasal Sinuses
part of the nasal complex Paired cavities in ethmoid, sphenoid, frontal and maxillary Lined with mucous membranes and open into nasal cavity though openings called ostia Resonating chambers for voice, lighten the skull Sinusitis is inflammation of the membrane (allergy) infection can easily spread from one sinus to the other through the nasal cavity can also spread to other tissues
frontal sinuses sphenoid sinuses ethmoid sinuses maxillary

Major cavities of Skull

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Views of the Skull and Landmark Features

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Views of the Skull and Landmark Features

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Views of the Skull and Landmark Features

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Anterior View of the Skull
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Anterior View of the Skull

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Superior View of the Skull

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Posterior View of the Skull

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Lateral View of the Skull

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Sagittal Section

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Inferior View of the Skull

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Superior View of the Skull
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Craniosynostosis

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Passageways within The Skull

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Passageways within The Skull

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