4-2 articulation & the skull Flashcards
ethmoid bone
forms root of nasal cavity
unpaired
cranial & facial
crista galli
superior & middle concha
cribriform, perpendicular, & orbital plate
superior & middle concha
folds in the bone
increase surface area of nasal cavity
perpendicular plate
divides left & right nasal cavity
cribriform plate
olfactory nerves go through the holes
frontal bone
unpaired
cranial
squamos & orbital portions
frontal bone connections
to parietal bones – coronal suture
to nasal bones – nasal portion
to zygomatic bones – zygomatic process
parietal bones
paired bones – articulate w/ each other @ sagittal suture
cranial
parietal bone connections
to occipital bones – lamboidal suture
to frontal bones – coronal suture
to temporal bones – squamosal suture
to sphenoid bones –
occipital bone
unpaired
cranial
squamos, basilar, & 2 lateral portions
2 condoyles – articulatory facets for C1 vertebra (atlas); inferior surface
foramen magnum
big hole for spinal cord
part of the basilar
occipital bones connections
to parietal bones – lamboidal suture
to temporal bones – occipitomastoid suture
to sphenoid bones – basilar part
temporal bones
paired
cranial (&facial)
squamos portion
petrous portion
tympanic portion
zygomatic portion
mastoid process
styloid process
each temporal bone articualtes w/ mandible via temporomadibular joint (TMJ) – connection at mandibular fossa
temporal bone connections
zygomatic – zygomatic process
mandible – temporomadibular joint
occpital – occipitomastoid suture
parietal – squamous suture
sphenoid – sphenosquamosal suture
sphenoid bone
butterfly shaped
paired
cranial
body
2 greater wings
2 lesser wings
2 pterygoid processes (lateral & medial plate each)
articulates w/ all cranial bones & several facial bones
mandible
unpaired
facial
largest & strongest facial bone
only movable bone of the skull – temporomandibular joint; 6 degress of freedom
body, ramus, & angle
body of mandible
mental symphysis
mental protuberance
alveolar arch - pocket that teeth sit in
ramus of mandible
coronoid process
condylar process
mandibular notch
maxillae
paired
facial
body
zygomatic process
frontal process
alveolar process
palatine process
nasal bones
paried
facial
articulate w/ each other at the midline
articulate w/ frontal bone & maxillae
palatine bones
paired, L-shaped
facial
horizontal & vertical plates
palatine bones articulations
other palatine bone
sphenoid bone
ethmoid bone
maxillae
inferior nasal concha
vomer
lacrimal bones
paired
smallest facial bones
lacrimal bones articulations
maxillae
frontal
ethmoid
zygomatic bones
paired
facial
frontal process
temporal process
maxillary process
orbital process
