1. Facial Bones
Mrs. Donohue

2. How many facial bones are there?
fourteen
Function?
Shape the face, support teeth & provide attachment sites for bone to make facial expressions
All are paired except for mandible & vomer

4. Maxilla
Joins to form the upper jaw (sockets for the teeth = alveoli)

5. Palatine Bones Posterior 1/3 of the hard palate Part of the orbits
Cleft palate

6. Zygomatic bones
Cheek bones

7. Lacrimal bones Anterior part of the orbit Smallest bone in the face
Nasolacrimal canals – lets tears drain into the nasal cavity

8. Nasal Bones
Inferior nasal conchae – lateral walls of nasal cavity-covered with mucus – warm & cleanse air

9. Vomer & Mandible
Vomer – triangular bone at the end of the nose – forms part of the nasal septum
Mandible – chin
**only movable bone in the head – holds alveolis for the lower teeth

10. Hyoid Bone Not attached to another bone
Suspended by ligaments & muscles
Supports the tongue
Provides attachment for muscles
Autopsy -Broken bone - estrangulation

11. Cavities of the Skull Surrounds & protects the brain Anterior/mid/
posterior cranium

12. Oral Cavity
Buccal-mouth
Hard & soft palate

13. Nasal Cavity
Nasal fossa
Respiratory system

14. Orbital Cavity
Support & protect the eyes

15. Middle Ear Cavities 3 bones = ossicles Malleus-hammer Incus-anvil
Stapes – stirrup smallest bone in the body

16. Sinuses in the skull Provides structure Decreases weight of the skull
Function: warm & moisten the air
Ethmoid & maxillary – usually infected
Mastoid sinus – connection between middle ear & mastoid sinus

17. Foramen Magnum Largest opening in the skull Part of occipital bone
Where spinal chord connects to the brain
Occipital condyles articulates with 1st cervical vertebrae (atlas)

18. Clinical Significance Sinusitis
Facial sinus cavity inflamed by infection, allergies or local irritants (virus, bacteria, fungal)
Thick yellow or green drainage
Blow nose too hard – can force contaminated drainage into sinus- causes infectioin