lesson 2 Cranial Bones; Facial Bones Flashcards
bones of cranium
frontal, parietal, temporal, occipital, sphenoid, ethmoid
bones of facial
mandible, maxilla, zygomatic, nasal (lacrimal, palatine, inferior nasal concha, vomer)
oval; form varies from person to person because of differences in width and length
geometric form (normal)
external cranial bones
frontal, occipital, parietal, temporal
anterior third of cranium; forms forehead and anterior portion of roof of skull
frontal
part of face above eyes
vertical surface
vertex; topmost part of head
horizontal surface
rounded prominences on either side of median line just inferior of frontal bone; vary in size and prominence among people
frontal eminence
superior rim of eye sockets
supraorbital margins
inferior part of forehead just superior to median ends of eye brows
superciliary arches
between superciliary arches and inferior part of frontal bone; lies at root of nose; lateral margins form a part of orbital margins and converge medially descend to nasal bones
glabella
lowest part of the back and base of cranium; forms cradle for brain
occipital bone
prominence at center of external surface of occipital bone
occipital protuberance
opening in occipital bone which spinal cord passes
foramen magnum
superior portion of sides and back of cranium as well as posterior 2/3rds of roof of cranium
parietal bones
mark convexity on outer surface of parietal bones
parietal eminences
marks widest part of cranium
parietal eminences
inferior portion of sides in base or cranium, inferior to paretial bones and anterior to occipital bone
temporal bones
concave surface of head that overlies the temporal bone
temporal cavity
vertical portion of temporal bone; comprises anterior and superior part of bone; scale like/thin/transluscent
squama
actual passage to hearing organ
external auditory meatus
procession on temporal and zygomatic bones
zygomatic arch
widest part of face
zygomatic/arch
small oval depression on zygomatic depression of temporal bone; where condyle of mandible articulates; anterior orf external auditory meatus
mandibular fossa (glenoid fossa)
rounded projection on inferior portion of temporal bone just posterior to lobe of ear where sternocleidomastoid muscle inserts
mastoid process
widest part of neck
mastoid process
external facial bones
nasal bones,zygomatic bones, maxilla, mandible
directly inferior to glabella; form dome over superior portion of nasal cavity; triangular in form
nasal bones
degree of inclination/projection to angle of jaw and forehead
angle of inclination
orifice in bony face bounded by margin of nasal bones and maxilla
nasal cavity
diamond shaped surfaces that form cheek bones; forms convex surface in both anterior and lateral direction; bone lies on front and side of cheeck; change in direction changes at center of bone half attached to temporal bone and other to malar bone
zygomatic bones
process of temporal and zygomatic bones
zygomatic arch
on lateral portion of cheek inferior to zygomatic arch
zygomatic arch depression
lateral rim of eye socket formed process of frontal bone and process of zygomatic bone
zygomaticofrontal process
paried bone of several processes that form the base of most of superior face; roof of mouth, sides of nasal cavity and floor of orbit upper jaw bone
maxilla
sharp bony projection located medially along inferior margin of nasal cavity
nasal spine
medial partition between nostrils; covers nasal spine; most inferor part of nose
columnar nasi
processes of maxilla
alveolar process, frontal process of maxilla, platine process, dental prognathism
bony ridges that contain tooth sockets
aveolar process
ascedning part of jaw which gradually protrudes as it rises beside the nasal bone to meet frontal bone
frontal process of maxilla
oblique insertion of teeth
dental prognathism
horseshoe shaped; inferior portion of jaw
mandible
horizontal poriton of lower jaw
body
triangular projection on inferior portion of anterior mandible
mental eminence
area between mental eminence and inferior incisor teeth; influences recession of lower integumentary lip
incisor fossa
vertical portion of mandible
ramus
rounded eminense at articulating end of bone
condyle
anterior eminense of ramus where temporal muscle attaches; nonarticulating
coronoid process
depression between condyle and coronoid process
madibular notch
formed by junction of posterior edge of ramus and inferior surface of body; marks widest part of lower 1/3rd of face
angle of mandible
small depression in zygomatic process where condyle articulates
mandibular fossa
measured by straight line between 2 angles of mandible;
bimandibular width
between nasal passages on median plane; forms inferior and posterior portion of septum of nose
vomer
