Download Skull bones - Littlemiamischools.org

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Frontal
Parietal
Occipital
Temporal
233 left
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Forehead: folds in to
make part of eye orbit
supraorbital
notch/foramen- above
eye: for nerves to face
232 left
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Behind frontal
Form top sides of
cranial cavity
233 right
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Back of skull/base
of cranium
Large opening in
lower surface=
foramen magnum
Occiptal condyleson either side of
f.m. articulate with
atlas
233 right
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Condylar canals- small
foramens on either
side of foramen
magnum
External occipital
protuberanceposterior projectionfelt as bump
Superior nuchal linecurved ridge extending
laterally from
e.o.protuberance
232 right
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Joins parietal bone on side:
contains external auditory
meatus-leads to inner earbelow this is :
Mastoid process –behind
ear, attachment for neck
muscles
Styloid process- pointed –
anchors muscles of tongue
& pharynx
Has zygomatic processjoins zygomatic bone, helps
form prominence of cheek
• Jugular
foramen
- entrance
for cranial
nerves
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Sagittal: separates left
and right parietal
bones
Coronal: separates
frontal from parietal
bones (like coronal
plane)
Lambdoid: separates
occipital from parietal
bones
242
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Has fontanels– fibrous
membranes connecting
the cranial bones =
“soft spots”
Enables head to pass
through birth canal
Allows rapid growth of
brain
Close/calcify as cranial
bones grow
234
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Between temporal and
zygomatic bones;
looks like a bat
Greater wing: on each
side, back wall of orbit
Lesser wing: 2 inside,
posterior roof of eye
orbit
234
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Pterygoid processes:
plates that border back
opening of nasal
cavities
Foramen rotundum:
opening in greater
wing for cranial nerve
235
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Anterior to sphenoidsmall
◦ Cribiform plate: roof of
nasal cavity
237 top left
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Cheek bones
◦ Zygomatic arch= prominence that connects
zygomatic to temporal bone
Maxillae
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Lower face/upper jawparts of these form
hard palate, Contain
sockets of teeth
◦ Palatine processes form
roof of mouth– if
incomplete = cleft palate
◦ Infraorbital foramentransmits vessels and
nerves
236 bottom
236 bottom
237 bottom
right
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2 bones form bridge of
nose
Gives shape to the
nose
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Back of roof of mouth
Irregular
Lateral walls of nasal
cavity
236 top
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Thin, flat, along
midline within the
nasal cavity
Posterior part of
septum
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Thin, delicate plates in
nasal cavity
3 sets in each cavity:
top, middle, bottom
Make narrow passage
airways to filter dust
237
bottom left
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Between ethmoid and
maxilla
Forms part of orbit
(eye socket)
Smallest bone of face
Lacrimal fossa: hole
that drains tear ducts
238
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Mental foramen- opening
dentists use to inject
anesthetics
Ramus- process that
projects up from posterior
of body
Body- main part- forms
chin
Symphysis menti- ridge
beneath teeth
Mandibular foramen- inside
of ramus
process
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Orbit: eye socket
Sinuses: mucous-lined,
air-filled spaces
Fontanelle: soft spots
of baby’s skull