1. The Skull The skull protects The skull contains 22 bones
_____________________
Entrances to respiratory system
The skull contains 22 bones
_____________________:
Form the braincase or cranium
Protect and support entrances to digestive and respiratory tracts
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2. The Skull Figure 7–2 Cranial and Facial Subdivisions of the Skull.
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3. The Skull Cranial Bones Facial Bones _______________________
Which contains the brain
And its fluids, blood vessels, nerves, and membranes
Facial Bones
__________________
For muscle attachment
Separate the oral and nasal cavities
Form the nasal septum
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4. The Skull Figure 7–3a The Adult Skull.
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5. The Skull Figure 7–3b The Adult Skull.
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6. The Skull Figure 7–3c The Adult Skull.
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7. The Skull Figure 7–3d The Adult Skull.
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8. The Skull Figure 7–3e The Adult Skull.
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9. The Skull Figure 7–4a The Sectional Anatomy of the Skull.
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10. The Skull Figure 7–4b The Sectional Anatomy of the Skull.
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11. The Skull Superficial Facial Bones ________________ Lacrimal ________
Zygomatic
Mandible
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12. The Skull _____________ ____________
Cavities that decrease the weight of the skull
Lined with mucous membranes
Protect the entrances of the respiratory system
____________
The immovable joints of the skull
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13. The Cranial Bones of the Skull
Occipital bone
Parietal bones
___________
Temporal bones
Sphenoid
_____________
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14. The Cranial Bones of the Skull
The Occipital Bone
Functions of the occipital bone
______________________________
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15. The Cranial Bones of the Skull
The Occipital Bone
Marks of the occipital bone
___________________________
Foramina of the occipital bone
Foramen magnum: connects cranial and spinal cavities
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16. The Cranial Bones of the Skull
Figure 7–5a The Occipital and Parietal Bones.
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17. The Cranial Bones of the Skull
_______________________
Functions of the parietal bones
Forms part of the superior and lateral surfaces of the cranium
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18. The Cranial Bones of the Skull
Figure 7–5b The Occipital and Parietal Bones.
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19. The Cranial Bones of the Skull
The Frontal bone
Functions of the frontal bone
Forms the anterior cranium and upper eye sockets
________________________
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20. The Cranial Bones of the Skull
Figure 7–6a The Frontal Bone.
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21. The Cranial Bones of the Skull
The Temporal Bones
Functions of the temporal bones
__________________________
Surround and protect inner ear
_________________________
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22. The Cranial Bones of the Skull
Marks of the Temporal Bones
Zygomatic process
Articulates with temporal process of zygomatic bone
__________________________
Mastoid process
For muscle attachment
Contains mastoid air cells connected to middle ear
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23. The Cranial Bones of the Skull
Marks of the Temporal Bones
Styloid process
To attach tendons and ligaments of the hyoid, tongue, and pharynx
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24. The Cranial Bones of the Skull
Figure 7–7a The Temporal Bones.
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25. The Cranial Bones of the Skull
Figure 7–7b The Temporal Bones.
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26. The Cranial Bones of the Skull
Figure 7–7c The Temporal Bones.
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27. The Cranial Bones of the Skull
The Sphenoid
Functions of the Sphenoid
_______________________
Unites cranial and facial bones
________________________
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28. The Cranial Bones of the Skull
Figure 7–8a The Sphenoid.
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29. The Cranial Bones of the Skull
Figure 7–8b The Sphenoid.
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30. The Cranial Bones of the Skull
The Ethmoid
Functions of the ethmoid
Forms anteromedial floor of the cranium
_______________________ )
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31. The Cranial Bones of the Skull
Figure 7–9 The Ethmoid.
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32. The Cranial Bones of the Skull
Figure 7–9 The Ethmoid.
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