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Bills 2nd Section Test 2014
IVU Headwork
27 cards·by arwatts
How many facial bones are there?
14
What are the names of the facial bones?
Maxilla, Zygoma, Lacrimal, Palatine, Inferior Nasal Conchae, Nasal, Vomer,Mandible
Acanthion
the junction of the upper lip and nose
What does the acanthion correspond to?
anterior nasal spine
External auditory meatus
external opening to the auditory canal
Glabella
superior to the bridge of the nose, between the superciliary arches (eyebrows)
Gonion
the angle of the mandible
Infraorbital Margin (IOM)
lower rime of the orbit
Inion
external occipital protuberance, occiput
Mental Point/ Mentum
midpoint of chin
Nasion
depression at the bridge of the nose
What does the nasion correspond to?
the nasofrontal suture
Tragus
small flap of cartilage extending from ear over the EAM
Outer Canthus
lateral junction of upper and lower eyelids
Vertex
most superior point of the head
MSP
midsagittal plane
OML
orbitomeatal line
IOML
infraorbital meatal line
AML
acanthomeatal line
MML
mentomeatal line
IPL
interpupillary line
If the MML is perpendicular to the image receptor this places the OML at how many degrees to the
film plane?
37 degrees
What does a Parietoacanthial projection best demonstrate?
blowout, tripod fractures and deviation of nasal septum
What does the blowout fracture result from?
A direct blow to the orbit
What is a blowout fracture?
A fracture of the orbital floor with fluid-filled maxillary sinus
Where t
answer
Where does the petrous ridges come from?
the temporal bone