Bony Landmarks Of The Skull

Front 1

frontal bone

Back 1

area of maximum convexity on the forhead and articulates w/ the frontal process of the maxillary bone on the medial side of the orbit

Front 2

glabella

Back 2

slight elevation directly between the two orbits in the frontal bone; just above the base of the nose

Front 3

nasion

Back 3

central depression at the base of the nose

Front 4

superciliary arch

Back 4

starts at the glabella and moves superiorly and laterally above the central portion of the eyebrow

Front 5

SOM

Back 5

just inferior to the eyebrow and is more pronounced on its lateral aspect; forms the roof of the orbit

Front 6

maxilla

Back 6

bone felt between the ala of the nose and the prominence of the cheek; houses the largest of the paranasal sinuses

Front 7

zygomatic bone

Back 7

forms part of the lateral aspect of the orbit and the prominence of the cheek

Front 8

mid-zygoma point

Back 8

a point midway between the EAM and the lateral canthus

Front 9

mastoid process

Back 9

an extension of the mastoid portion of the temporal bone at the level of the ear lobe

Front 10

external occipital protuberance (EOP or inion)

Back 10

prominence in the posterolateral aspect of the occipital bone of the skull

Front 11

angle of the mandible

Back 11

point at which the muscles used for chewing are attached