Facial Bones Nasal Bones (2) Maxilla Bones (2) Lacrimal Bones (2) Zygomatic Bones (2) Palatine Bones (2) Inferior Nasal Conchae (2) Vomer Mandible.

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Presentation transcript:

Facial Bones Nasal Bones (2) Maxilla Bones (2) Lacrimal Bones (2) Zygomatic Bones (2) Palatine Bones (2) Inferior Nasal Conchae (2) Vomer Mandible

Nasal Bones Together, form the bridge of the nose

MaxillaBones Form: –Upper jaw –Anterior roof of mouth (hard palate) –Floor of eye socket(orbit) Contain sockets for upper teeth

Maxilla Bones Maxillary Sinuses: largest sinuses

Lacrimal Bones Front part of the medial orbit wall Between the maxilla and ethmoid bones House nasolacrimal ducts (tear ducts)

Zygomatic Bone Forms: – prominence of cheek –Part of lateral wall and floor of orbit

Palatine Bones Form: –Posterior hard palate –Floor & lateral wall of nasal cavity –Floor of orbit Affected with a cleft palate

Inferior Nasal Conchae Projections in lateral wall of nasal cavity Support mucous membranes –Warm, moisten, filter air Increase surface area

Vomer Thin flat bone in medial plane Along with ethmoid, forms the nasal septum

Mandible Lower Jaw Largest and strongest bone of face Only movable bone of skull Houses lower teeth

Mandible Mandibular Condyle: articulates with temporal bone Coronoid Process: site of attachment for mastication muscles- protrudes when jaw is depressed

Fontanelles membraneous spaces between the skull bones of the fetus and infant where ossification is not complete. Permit compression at birth Skull bones are thin and flexible, so less easily broken aka “soft spot” in infants

Fontanelles Complete ossification of fontanelles occurs by age 26 –Posterior closes by ~2 months –Sphenoid closes by ~ 3 months –Mastoid closes by ~ 1 year –Anterior closes ~end of 2 nd year of life