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Skull landmarks

Procedures 2. Skull landmarks, planes, lines

QuestionAnswer
Interpupillary line. Where connects the pupils or the outer canthi of the patients eyes
superciliary arch. Where? What is slightly above it? ridge of bone that extends across the forehead above each eye. SOG is slightly above
SOG corresponds to highest level of the facial bone mass, also is the level of the floor of the anterior fossa of the cranial vault
Glabella above bridge of nose, slightly superior to eyebrows
nasion junction of the two nasal bones and the frontal bone
acanthion midline junction of the upper lip and nasal septum
gonion angle on mandible
mental point midpoint of triangle area on chin. (triangle formed between 2 mental protuberances)
Auricle aka _____. Is what? pinna. Flap of ear made of cartilage
Tragus small flap that covers ear opening
TEA top of ear attachment, superior attachment of the auricle
TEA corresponds to what level? highest level of the petrous ridge on each side
Junctions of upper and lower eyelids termed canthi
EAM's center pont of opening is termed auricular point
OML location outer canthus and EAM
Two older terms for IOML? Reids base line or anthropologic base line.
Average difference of how many degrees between OML and IOML? 7-8
Approximate 7-8 degree average angle difference between OML and IOML, and ____ and ____. OML and GML
LML is a positioning line used for what projection of the facial bones? modified parietoacanthial (modified waters)
GAL? glabelloalveolar line. Glabella to a point at the anterior aspect of the alveolar process of the maxilla.
GAL is used for positioning in what projection for nasal bones? tangential
Inion is the most prominent point of the _______. Corresponds to the highest _____ line of the occipital bone . external occipital protuberance. highest "nuchal" line
A posterior extension of the ______ approximates the location of the inion IOML
Created by: Zoest35