bones of the skull

Created by jabatem2 

Upgrade to
remove ads

72 terms · use for pharynx/articulation section

number of bones in the skull

22, some paired and unpaired

immovable joints

sutures

skull divides into two parts

facial and cranial

lower jaw

mandible

paired bone with a symphasis

mandible

name the parts of the mandible

body, alveolar arch, angle, ramus, coronoid process, condylar process

anterior arch of the mandible

body aka corpus

upper ridge that houses the teeth

alveolar arch

point where arch stops and changes directions on the mandible

angle

superior, lateral, posterior projection of arch of the mandible

ramus

anterior process at top of ramus, point of muscle attachment, deep to zygomatic process

coronoid process

posterior process at the top of ramus, point of articulation with temporal bon at TMJ

condylar process

name all the facial bones of the skull

mandible, maxillae, nasal bones, palatine bones, lacrimal bones, zygomatic bones, inferior nasal conchae, vomer

paired bone that forms the upper jaw

maxillae

bone of the jaw that doesnt move

maxillae

maxillae forms what

roof of mouth, floor and lateral walls of the nasal cavity, floor of the orbits

roof of mouth, floor and lateral walls of the nasal cavity, floor of the orbits

maxillae

roughly pyramidal body and has four main parts

maxillae

name the parts of the maxillae

zygomatic process, frontal process, palatine process, alveolar process

articulates with the zygomatic bone superiorly and laterally, b/w anterior and posterior surfaces on later aspect of bone

zygomatic process

superiorly directed plate ont eh anterior surface, articulates with the frontal bone

frontal process

horizontal plate directed medially, articulates with the opposite side to form anterior 2/3 or 3/4 of hard palate, fused at midline

palatine process

inferiorly directed process that ccontains teeth

alveolar process

what forms the brigde of the nose

nasal bones

desribe the nasal bones

2 small oblong bones, fused at midline (left and right), lie medial to the frontal processes of the maxillae, articulate with frontal bone, maxillae, and other bones of the nose

2 small oblong bones, fused at midline

nasal bones

fused superiorly to the frontal bone

nasal bones

horosontal plate/ small but complex

palatine bones

describe the palatine bones

located at the back of the nasal cavity,
contributes to posterior floor and lateral wall of nasal cavity,
posterior 1/4 of hard palate
floor of orbit
has the posterior nasal spine

the posterior projection of the palatine/landmark for x-rays

posterior nasal spine

located at the back of the nasal cavity and creates 1/4 of the hard palate

palatine bone

smallest of the facial bones

lacrimal bones

forms part of the medial wall of the orbital cavity

lacrimal bones

your check is formed how?

zygomatic arch=zygomatic process of maxilla and temporal bones

roughly quadrilateral body, bone of the facial skeleton

zygomatic bone

name the four processes of the zygomatic bone, and what bones do they attach with?

maxillary process
frontosphenoidal process
orbital process
temoporal process
the process goes with the corrosponding bone

what 2 bones make up the hard palate

maxillae an palatin

makes up the most inferior part of lateral nasal walls, paired

inferior nasal conchae

articulates anteriorly with the maxillae and posteriorly with palatine bone

inferior nasal conchae

inferior half or bone nasal septum

vomer

articulates inferiorly with the maxialla and palatine bones

vomer

anterior border articulates with cartilaginous septum on nose

vomer

name all the bones of the cranial skeleton

ethmoid
frontal
parietal bone
occipital bone
temporal bone
sphenoid bone

describe the ethmoid bone

unpaired
very thin bone
articulates with 15 bones
contributes to orbit and nasal cavities
has four major parts

name the 15 bones that articulate with the ethmoid bone

frontal
sphenoid
nasals
lacrimals
palatines
vomer
inferior nasal conchae
zygomatics
maxillae

name all the parts of the ethmoid

cribiform plate
crista galli
ethmoid labyrinth
conchae

horizontal plate separates cranial and nasal cavities: forms rof of nasal cavities

cribiform plate

superior prjection from cribiform plate; triangular process that seperates the cranial hemisphere ( separates the 21/2's of the brain)

crista galli

think walled, with variable air pockets, lightens the weight of the skull

ethmoid labyrinth

lateral portion of the ethmoid labyrinth

conchae

comprised of 2 lateral plates that house the superior and medial nasal conchae, form lateral walls of nasal cavity

conchae

describe the frontal bone

unpaired
anterior part of the brain case
vertical plate (forehead) horizontal aspect that contributes to the rood of the orbit and nasal cavity

consists of a vertical plate and contributes to the roof of the orbits and nasal cavities

frontal bone

the midline notch of the frontal bone
and what does it articulate with?

ethmoid notch, articulates with the ethmoid bone

lateral to the orbital surfaces for articulation to the zygomatic bone

zygomatic process

section above the orbits, located where the eye brows are, part of what bone

supraortbital rim, frontal bone

AKA cranial vault

parietal bone

describe the parietal bone

paired bone
joined at the sagittal suture
forms the rounded roof of cranium
roughly quadrilateral
very little muscle attachment
articulates with frontal bone and coronal suture

joined at sagittal suture cranial vault

parietal bone

decribe the occipital bone

unpaired
allows head movement
forms the inferior and posterior portion of the cranium

where spinal cord leaves the brain and what bone is this located

occipital bone located, FORAMEN MAGNUM

what is lateral to the foreman magnum and what does it does it articulate with?

lateral condyles, articulates with C1

describe the temporal bone

paired bone
forms lateral base
some sides of the cranium
3 main parts:
squamous portion
petrous portion
tympanic portion

portion that lateral, anterior, and superior aspects
articulates with the temporal process of zygomatic bone and partietal bone

squamous portion

located at the base of the skull,
houses hearing and balance organs

petrous portion

infront of mastiod process
forms part of external auditory canal

tympanic portion

describe the sphenoid bone

articulates with all bones of the cranial skeleton
3 of the facial, vomer.palatines, and zygomatics
located at base of skull
anterior to foramen magnum
looks like a bat
thin bone
four parts: body/lesser wings/greater wings/pterygoid processes

bone located at base of skull
anterior to foreman magnum

sphenoid bone

anterior surface of bone that forms the posterior wall of nasal cavity

body of sphenoid

laterally directed plates contribute to superior wall of orbits, part of a cranial bone

lesser wings of sphenoid bone

directed laterally/curved/1/2 of the lateral orbit wall

greater wings of sphenoid bone

attachmen for pterygoid muscles, deviedes into lateral medial plates, medial terminates at _____what?

pterygoid process
hamulus

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set