Ch. 11 F.B., Nasal, and Orbits Notes Flashcards
How many facial bones and what are they
- 2 maxillary bones
- 2 zygomatic bones
- 2 lacrimal bones
- 2 nasal bones
- 2 nasal conchae
- 2 palatine bones
- vomer
- mandible
what bones does each maxilla articulate with
2 cranial bones
- frontal
- ethmoid
7 facial bones
- zygoma
- lacrimal
- nasal
- palatine
- inferior nasal concha
- vomer
- adjacent maxilla
what bones does each zygoma articulate with
3 cranial bones
- frontal
- sphenoid
- temporal
1 facial bone
- maxilla
what bones does each lacrimal bone articulate with
2 cranial bones
- frontal
- ethmoid
2 facial bones
- maxilla
- inferior nasal concha
what bones does each nasal bone articulate with
2 cranial bones
- frontal
- ethmoid
2 facial bones
- maxilla
- adjacent nasal bone
what bones does each inferior nasal concha articulate with
1 cranial bone
- ethmoid
3 facial bones
- maxilla
- lacrimal
- palatine
what bones does each palatine articulate with
2 cranial bones
- sphenoid
- ethmoid
4 facial bones
- maxilla
- inferior nasal conchae
- vomer
- adjacent palatine
what bones does the vomer articulate with
2 cranial bones
- sphenoid
- ethmoid
4 facial bones
- right and left palatines
- right and left maxillae
(also with the septal cartilage)
what bones does the mandible articulate with
temporal bone
largest immovable bones of the face
maxillae
most all other facial bones are closely associated with these two bones
maxillae
the right and left maxillary bones are anchored at the midline below this
nasal septum
each maxilla assist in the formation of what 3 cavitites
- mouth
- nasal cavity
- 1 orbit each
what does each maxilla consist of
a body and 4 processes projecting from the body
what are the 4 processes of each maxilla
- frontal process
- zygomatic process
- alveolar process
- palatine process
eight upper teeth on each side are embedded in cavities along the inferior margin of this process
alveolar process of maxilla
both of these processes form the roof of the mouth, and can only be seen in an inferior view
palatine processes of each maxilla
congenital defect in which the palatine processes of each maxilla do not unite
cleft palate
form the posterior part of the hard palate
palatine bones
located lateral to the zygomatic process of the maxilla
zygomatic bones
forms the prominent part of the cheek and make up the lower outer portion of each orbit
zygomatic bones
zygomatic bones connect to the zygomatic process of which bone to form the zygomatic arch
temporal bone
the thinnest and most delicate bones in the body
lacrimal and nasal bones
these are associated with the tear ducts
lacrimal bones
about the size and shape of a fingernail
lacrimal bones
located anteriorly on the medial side of each orbit
lacrimal bones
two fused bones form the bridge of the nose
nasal bones
located anterior and superior to the frontal processes of the maxillae
nasal bones
scroll shaped bones, thin and curved
(inferior) nasal conchae
project from the lateral walls of the nasal cavities
(inferior) nasal conchae
what are the superior and middle nasal conchae formed from
ethmoid bone
these divide the nasal cavities into compartments to break the flow of air coming in through the nose
3 pairs of nasal conchae
nasal conchae clean and warm the air as it comes in contact with these which cover the conchae
mucous membranes
these bones are located internally and are āLā shaped
palatine bones
the vertical portion of the palatine bone extends between what
1 pterygoid palate of the sphenoid and 1 maxilla
the horizontal portion of the palatine makes up what
posterior portion of the hard palate
partially makes up the bony nasal septum along with the perpendicular plate of the ethmoid bone
vomer
anteriorly the bony nasal septum is what
cartilaginous called the septal cartilage
a severally pushed to one side, away from midline septum
deviated septum
where does deviation of the septum usually happen at
junction between the septal cartilage and the vomer
thin and triangular bone
vomer
surface of this bone is marked by small furrowlike depressions for blood vessels - causes a source of a nose bleed when there is trauma to the nose area
vomer
what type of joint is the temporomandibular joint (TMJ)
synovial - bicondylar and plane (gliding)
what type of joint is the alveoli and roots of teeth
fibrous - gomphosis, synarthrodial movement
thin and horseshoe shaped
mandible
largest of the facial bones
mandible
only moveable bone in the adult skull
mandible
single bone, but at birth until about 1 year of age is 2 separate bones that then fuse
mandible
angle of the mandible
gonion
superior to the angle of the mandible
ramus
anterior to the angle of the mandible
body
both bodies of the mandible unite at the midline to form this
symphysis menti
depression below the symphysis menti
mentum or mental protuberance
the very center of the mentum/mental protuberance
mental point
located on each half of the mandible which serve as passageways for nerves and blood vessels
mental foramina
terminate in a āUā shaped notch
ramus
what is the notch of the ramus called
mandibular notch
each mandibular notch has two processes, the most anterior process is called what
coronoid
each mandibular notch has two processes, the posterior process is called what
condyloid
this process of the ramus serves for muscle attachment and cannot be easily felt
coronoid
this process of the ramus fits into the temporomandibular fossa of the temporal bone
condyloid process
only moveable joint in the skull
TMJ
what is the rim of the cone of the orbits called
base
what is the point of the cone of the orbits which is most posterior called
apex
when the head is placed lateral and the OML is parallel to the floor how do the orbits project
superior at 30 degrees and medial at 37 degrees
how many bones are the orbits composed of
7 different bones
what bones are the circular base of the orbits composed of
- maxilla
- frontal
- zygomas
what bones are the inside of the cones of the orbits composed of
- lacrimal
- ethmoid
- sphenoid
- palatine
a hole in the sphenoid bone located at the very posterior of the cone (apex) where the optic nerve runs
optic foramen
an opening between the greater and the lesser wings of the sphenoid bone located lateral to the optic foramen
superior orbital fissure
located between the maxilla, zygomatic bone, and the greater wing of the sphenoid
inferior orbital fissure
a small piece of bone which is a portion of the lateral wall of the optic canal
sphenoid strut
