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Transcript
11/9/2013
Ch.6-7 I
Skull Bones
 22
total bones (8 Cranial, 14 Facial)
 All bones firmly
interlocked along suture
lines (except mandible)
 Provide protection
for brain &
attachment points for muscles
(chewing, movement)
 Forms forehead
and roof of
orbits
 Sides of
the
skull, posterior
to frontal bone
 Form
roof &
superior walls
of cranium
 Posterior to
parietal bones
 Forms posterior
& inferior
portions of
cranium
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11/9/2013
 Inferior to
parietal bones
 Form
sides &
base of
cranium
 Forms floor
of
cranium
 Wedged
between
several other
bones
 Anterior to
sphenoid bone
 Two
masses,
one on each
side of nasal
cavity
 Articulates with
all
other facial bones
 Forms the:
 Roof of Mouth (Hard Palate)
 Floor of Orbits
 Walls of Nasal Cavity
 Posterior to
 Roughly
Maxillae
L-shaped
 Horizontal – Posterior of hard palate
Floor of Nasal cavity
 Vertical –
Lateral walls of nasal cavity
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11/9/2013
 Articulates with
palatine bones
 Articulate with
 Forms nasal septum
with Ethmoid bone
 Form
frontal
bone & maxilla
 Form
bridge of nose
 Fragile,
scroll-shaped
bones projecting from
lateral walls of nasal
cavity
lateral walls of
orbits
 Form
 Articulate with
frontal
bone & maxilla
the cheekbone
 Within
medial surface
of each orbit
 Articulate with
frontal,
ethmoid, and maxilla
 Articulates with
temporal bone
 Only skull
bone that is
mobile
 Provide support
for
mucous membranes
3
11/9/2013
 Suspended below the
 Functions
skull
to:
 Study,
study, study…
 Coloring
 Serve as base for muscles associated with
larynx, tongue, pharynx
 Support and stabilize position of larynx
4