Axial Skeleton - Skull

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Post on 07-May-2015

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Slideshow of the bones of the Skull, part of the Axial Skeleton

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<ul><li>1.Axial Skeleton<br />TheSkull<br /></li></ul> <p>2. TheSkull<br />Two parts of the skull:<br />The cranium encloses and protects the brain<br />The facialbones hold the eyes and face shape<br />3. TheSkull - Cranium<br />Eight large flat bones fused together (sutures):<br />Frontal forms forehead<br />Parietal superior and lateral walls (paired)<br />Temporal inferior to parietal, at temples (paired)<br />Occipital posterior wall<br />Sphenoid deep to the anterior of skull, forms floor of cranial cavity<br />Ethmoid forms roof of nasal cavity, medial walls of orbits<br />4. The Skull - Cranium<br />5. The Skull - Cranium<br />6. The Skull - Cranium<br />7. The Skull - Cranium<br />8. The Skull - Cranium<br />9. The Skull - Cranium<br />10. The Skull - Face<br />Thirteen bones fused together, with one connected by joints<br />Maxillae forms upper jaw (paired)<br />Palatine posterior to maxillae, between back molars (paired)<br />Zygomatic cheekbones, lateral walls of orbits (paired)<br />Lacrimal part of medial walls of orbits, between ethmoid bones and maxillae (paired)<br />11. The Skull - Face<br />Continued<br />Nasal bridge of nose (paired)<br />Vomer median line of nasal cavity<br />Inferiorconchae bone projections from lateral wall of nasal cavity (paired)<br />Mandible lower jaw, connected by only freely movable joint of face<br />12. The Skull - Face<br />13. The Skull - Face<br />14. The Skull - Face<br />15. The Skull - Face<br />16. The Skull - Face<br />17. The Skull - Face<br />18. The Skull - Face<br />19. The Skull - Face<br />20. The Skull<br />Hyoid Bone<br />Not technically part of skull<br />Does not articulate directly with any other bone<br />Anchored to temporal bones by ligaments<br />Movable base for tongue<br />Attachment point for neck muscles<br />21. The Skull<br />22. The Skull Bone Markings<br />Bone Markings<br />Meatus canal-like passageway<br />External Auditory Meatus canal leads to eardrum and middle ear (temporal)<br />Process bony prominence<br />Styloid Process inferior to auditory meatus (temporal)<br />Zygomatic Process anterior to cheek bone (temporal)<br />Mastoid Process posterior and inferior to auditory meatus (temporal)<br />Palatine Processes extensions of maxillae that form the anterior part of the mouth (maxillae)<br />23. The Skull Bone Markings<br />Foramen opening through bone<br />Jugular Magnum at junction of occipital &amp; temporal bones, opening for jugular vein (temporal)<br />Carotid Canal anterior to jugular foramen, opening for carotid artery (temporal)<br />Foramen Magnum opening for spinal cord to connect to brain (occipital)<br />Foramen Ovale opening for nerve fibers to pass to jaw muscles (sphenoid)<br />Condyle rounded articular projections (involved with joints)<br />Occipital Condyles rest on the first vertebra of the spinal column (occipital)<br />Sinuses cavities in bone filled with air<br />Paranasal Sinuses found in different bones surrounding nasal cavity (frontal, ethmoid, sphenoid, maxillae)<br />24. The Skull Bone Markings<br />25. The Skull Bone Markings<br />26. The Skull Bone Markings<br /></p>