Ch.11 Facial Bone Anatomy Part 2

kkaitlyn96's version from 2017-03-27 21:39

Section 1

Question Answer
What are the 4 groups of sinuses?frontal, ethmoid, maxillary, sphenoid
When does the maxillary sinuses form?at birth
When does the frontal and sphenoid sinuses form?6 or 7 years old
Where do all of the sinuses connect?osteomeatal complex
Maxillary sinuses are located where?In body of maxillary bone, just above teeth
What does the upper aspect of the maxillary sinuses communicate with?Nasal cavity

Section 2

Question Answer
What is the frontal sinuses separated by?septum
Where is the frontal sinuses located?In forehead
Is the frontal sinuses larger in females or males?Males
Where is the ethmoid sinuses located?lateral masses
What does the ethmoid sinuses have?collections with air cells
What are the 3 collections in the ethmoid sinuses?anterior, middle, and posterior
Where is the sphenoid sinuses located in relation to the ethmoid sinuses?posterior to ethmoid sinuses
Why is the sphenoid sinuses important in trauma/ Basal skull fracture?air fluid levels
When there is fluid in the sphenoid sinuses what is it called and what kind of fluid is it?Sphenoid Fusion, blood or CSF

Section 3

Question Answer
What projection best visualizes the frontal sinuses?PA Caldwell
What two projections visualize all 4 sinuses?Lateral and Open mouth Waters
What is the base of the orbit?rim or outer portion
What is the most posterior portion of the orbit?apex with the optic foramina
When the OML is parallel to the floor each orbit project _________ degrees superiorly30
When the OML is parallel to the floor each orbit project _________ degrees with midsagittal plane37
How many bones make up the orbit?7
How many cranial bones and facial bones make up the orbit?3;4
What cranial bones make up the orbit?Frontal, Ethmoid, Sphenoid
What facial bones make up the orbit?Lacrimal, Palatine, Maxilla, Zyagoma
What bones make up the base of the orbit?maxilla, zygoma, and frontal
What are the 3 openings in the orbit?optic foramen, superior and inferior orbital fissure
What are the openings in the orbits for?cranial nerves

Section 4

Question Answer
Blowout fracturepushes through the floor of the orbit
Tripod fractureloose zygoma, all 3 parts of zygoma become unattached
Contracope fractureWhen trauma happens on one side but the fracture occurs on the opposite side
Lafort facturebilateral horizontal fractures through maxilla

Section 5

Question Answer
Skull morphologyclassification by size and shape
Mesocephalicaverage size skull, petrous pyramids are 47 degrees from midsagittal
BrachycephalicShort wide skull, petrous pyramids are greater than 47 degrees
DolichocephalicLong narrow skull, petrous pyramids are less than 47 degress
What do you do if someone is Brachycephalicrotate less
What do you do if someone is Dolichocephalicrotate more

Section 6

Question Answer
Interpupillary line (IPL)Between eyes
Superciliary ridgearch of bone across forehead
Supraorbital groovehighest level of facial bone mass, same as orbital plates
GlabellaBetween eyebrows
Nasiondepression at bridge of nose
AcanthionJunction of nose and upper lip
GonionAngle of mandible
mental pointCenter of chin
Inner and outer canthuscorners of eyes
Midlateral orbital marginat outer canthus
TEAtop of ear attachment, level of petrous ridges
EAMexternal acoustic meatus
AMLAcanthiomeatal line
LMLLipsmeatal line
MMLMentomeatal line
GMLGlabellomeatal line
OMLOrbitomeatal line
IOML (another name)Infraorbitomeatal line (Reids base line)
GALGlabelloalvelloar line