facial bones Flashcards
how many facial bones are there
14
what are facial bones for
mastication and facial expressions
what do the nasal bones articulate with (4)
the other nasal bone
frontal bone (nasion)
maxillae
perpendicular plates of ethmoid
what are the facial bones (8)
nasal bones
lacrimal bones
maxillary bones
zygomatic bones
palatine bones
inferior nasal conchae
vomer
mandible
what do the nasal bones form
the bridge of the nose
where are the lacrimal bones (in relation to nasals)
posterior and lateral to nasal bones
why is the nasal bone image so widely collimated
to include the anterior nasal spine
what is/are the smallest bone(s) in the face
the lacrimal bones
what passes through the lacrimal bones
the tear ducts
what do the maxillary bones articulate with
every other facial bone except the mandible,
plus the frontal and ethmoid bones
what do the maxillary bones form (3)
part of lateral walls and floor of nasal cavity
part of the floor of the orbits
3/4 of the hard palate
why is the maxillary bone important to mastication
it forms the hard surface to help in making a bolus of food
what does the maxillary body contain
the maxillary sinuses
what makes up the hard palate?
3/4 maxillary
1/4 palatine
what is outside of the anterior nasal spine
acanthion
what are the 4 processes that come from the maxillary body
frontal
zygomatic
alveolar
palatine
what is the most important process in lateral facial imaging
zygomatic process of the maxilla
what does the frontal process of the maxilla articulate with
the nasal bone and frontal bone
what does the zygomatic process of the maxilla articulate with
the zygoma
what does the alveolar process of the maxilla articulate with
8 teeth
what does the palatine process of the maxilla articulate with
the palatine bones
how does the zygomatic bone appear on lateral facial/orbit projections
triangular
what happens when the 2 palatine processes do not fuse together
forms a cleft palate
where is the inferior orbital fissure
between the greater wing of the sphenoid and the maxilla
what is the infraorbital foramen for
maxillary (2nd) branch of the trigeminal nerve
what do the zygomatic bones form
the cheek bones (malar)
what do the inferior nasal conchae form
inferior wall of the nasal cavity
what do the zygomatic bones articulate with (4)
frontal
temporal
sphenoid
maxillary