Download Facial Skeleton!

Facial Skeleton!
Kelsey Hillman, Tyler Jaffe, and Brittain Dearden
Why do we have a facial
skeleton?
The facial skeleton
•protect the brain
•house and protect the sense organs of smell, sight, and
taste
•Gives a frame for the soft tissues of the face
•Allows you to eat, make facial expression, breath, and
speak.
http://www.youtube.com/watch?v=J4aZjh1
Nvh0&feature=player_detailpage#t=209s
Parietal bone
Frontal bone
Bones
Coronal suture
Infraorbital foramen
Supraorbital foramen
Lacrimal bone
Nasal bone
Sphenoid
Superior orbital fissure
Temporal bone
Middle nasal concha
Perpendicular plate
of ethmoid
Vomer
Mandible
Zygomatic bone
Inferior Nasal
Concha
Maxillary bone
Bones!
 The frontal bone: forms the forehead and the roof of the orbits,
the bony recesses that contain the eyes. The openings and raised
ridges in the frontal bones provides a passageway for blood
vessels and nerves passing to or from the eyes.
 Palatine bone: forms the posterior surface of the “roof of the
mouth” or hard plate/bony plate
 Vomer: forms an important section that holds the nasal septum
along with ethmoid bone.
 Zygomatic bone: articulates with frontal bone and the maxilla to
complete the lateral wall of the orbital The zygoma forms the
lateral portion of the inferior orbital rim, as well as the lateral rim
and lateral wall of the orbit. Additionally, it forms the anterior
zygomatic arch, from which the masseter muscle is suspended.
Maxillary bone
1.
Forms the floor and middle
portion of the rim of the
orbit.
2.
Form the walls of the nasal
cavity
3.
Forms the anterior of the
mouth
4.
Top part of the jaw
5.
Hold the top row of teeth
 Nasal bone: forms the bridge of the nose
 Lacrimal bone: located with in the orbital works as a
pathway for the tube that transports tears.
 Inferior nasal conchae: helps slow airflow and deflect
arriving air toward the olfactory receptors.
 Mandible: lower jaw. Allows you to open your mouth to
chew, talk, breath and more.
The temporomandibular
joint allows the jaw to
move.
Explanations
Sella turcica:
•The central depression in the middle of the lateral wings of the Sphenoid
bone. It encloses the pituitary gland.
Crista galli:
•also known as "Cocks Comb.” A prominent ridge that projects above the
superior surface of the echinoid bone.
Cribriform plate:
•Allows passage of the olfactory nerves, which provide the sense of smell
Diagrams
Sinuses
 Maxillary sinuses: lightens the weight of the bone
 Paranasal sinuses: helps protect the repertory system
and reduces the weight of the skull. Warms the air that
enters the body. Air filled chambers in the frontal,
sphenoid, ethmoid, palatine, and maxillary bone make
up the paranasal sinuses.
Articulations
Frontonasal Suture
Internasal Suture
Nasomaxillary Suture
Sphenofrontal Suture
Sphenozygomatic suture
Zygomaticomaxillary Suture
Frontolacrimal Suture
Things That Can Go Wrong
Congenital
Proteus syndrome:

uncontrolled tissue and bone growth. Creates deformities in face like long face, outside
corners of the eye that point downward, low nasal bridge with wide nostrils, and an open
mouth expression
Cleft lip/ cleft palate:

When the two maxilla bones don’t develop fully and create the inter nasal spine
Trauma
Broken nose:

occurs when the Vomer or nasal septum brakes in half or is separated by a heavy
impact to the face.
Diseases of bone
Bone cancer:

Abnormal cellular activity Infections- such as syphilis in its later stages. It can create
holes in the roof of the mouth.
Bibliography
 http://webs.ashlandctc.org/mflath/key137axialappobject
ives.htm
 http://www.brighthub.com/science/medical/articles/5741
9.aspx
 http://www.billcasselman.com/unpublished_works/sinus
_origin.htm
 http://en.wikipedia.org/wiki/Maxilla
 http://emedicine.medscape.com/article/835401overview
 http://face-andemotion.com/dataface/anatomy/facialbones.jsp