Download Cranial bones

The bones of the skull
protect the brain and
guard the entrances to
the digestive and
respiratory systems.
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Frontal bone
Zygomatic
bone
maxilla
vomer
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mandible
Frontal bone
Zygomatic
Process
(frontal bone)
Supraorbital
Foramen
(frontal bone)
Glabella
(frontal bone)
Supraorbital
Margin
(frontal bone)
Infraorbital foramen
(maxillary bone)
Middle nasal concha
(ethmoid bone)
Perpendicular plate
(ethmoid bone)
maxilla
Alveoli processes
(maxillary bone)
vomer
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Inferior nasal concha
mandible
Alveoli processes
(mandible)
Frontal eminence
Superciliary arch
(frontal bone)
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Perpendicular plate (ethmoid bone)
Infraorbital foramen
(maxillary bone)
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vomer
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Optic foramen or canal (sphenoid bone)
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When the supraorbital foramen is not completely
enclosed by bone, there is a supraorbital notch, rather
than a foramen, on the orbital rim, as is the case for
this specimen.
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Optic canals permit passage of the
optic nerves from the eyes to the brain.
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The inferior orbital fissure
permits passage of cranial
nerves and blood vessels.
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The superior orbital fissure
permits passage of cranial
nerves and blood vessels to the orbit
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Frontal
bone
Parietal bone
Occipital bone
Temporal bone
maxilla
mandible
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Zygomatic
bone
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Frontal
bone
Coronal suture
Zygomatic process
(frontal bone)
Parietal bone
Frontal process
(zygomatic bone)
Occipital bone
Zygomatic process
(Temporal bone)
Condylar process
(mandible)
External auditory meatus
(temporal bone)
maxilla
Temporal process
Zygomatic bone
ramus
Coronoid process
(mandible)
External occipital
protuberance
Mastoid process
(temporal bone) Styloid process
(temporal bone)
angle
mandible
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Supra meatal triangle
Mandibular
condyle
Post glenoid process
External auditory meatus
(temporal bone)
Tympanic part
mandible
Mastoid process
(temporal bone)
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Styloid process
(temporal bone)
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Frontal bone
Zygomatic process
(frontal bone)
Sphenoid bone
Frontal process
(zygomatic bone)
Zygomatic arch
Ethmoid
bone
Zygomatic bone
Condylar process
(mandible)
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Coronoid process
(mandible)
maxilla
mandible
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Sagittal suture
Parietal bone
Lambdoidal
suture
Parietal bone
Occipital bone
External occipital
protuberance
Middle nuchal line
Condyloid canal
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Superior nuchal
line
Inferior nuchal
line
Mastoid process
(temporal bone)
Styloid process
(temporal bone)
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Frontal bone
Coronal suture
Parietal bone
Parietal bone
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Occipital bone
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Lesser wing (sphenoid bone)
Greater wing
(sphenoid bone)
Jugular foramen
Mastoid foramen
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Foramen magnum surrounds
the connection between the
brain and spinal cord.
Hypoglossal canals
Location of foramen rotundum (sphenoid bone), although not shown on this model
Foramen lacerum
(sphenoid bone)
Foramen ovale
(sphenoid bone)
Lesser wing (sphenoid bone)
Greater wing
(sphenoid bone)
Foramen spinosum
(sphenoid bone)
Foramen
magnum
Internal occipital crest
Internal occipital
protuberance
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Cribiform plate
(ethmoid bone)
Lesser wing (sphenoid bone)
Sulcus chiasmatis
Tuberculum sellae
Sella turcica
(sphenoid bone)
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Fossa hypophysis
Dorsum sellae
Crista galli
(ethmoid bone)
Crista galli
(ethmoid bone)
The falx cerebri, a membrane that stabilizes the
position of the brain, attaches to this ridge.
Lesser wing (sphenoid bone)
Greater wing
(sphenoid bone)
Sella turcica
(sphenoid bone)
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Optic canal
(sphenoid bone)
The hypophyseal fossa,
the depression within the
sella turcica houses and
protects the pituitary gland.
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Lesser wing
(sphenoid bone)
Petrous portion
(temporal bone)
nasal
Alveoli processes
(maxillary bone)
Internal acoustic canal
(temporal bone)
mandible
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body
ramus
angle
Mastoid process (temporal bone)
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Internal auditory meatus
(temporal bone)
The internal auditory canal (meatus) carries
blood vessels and nerves to the
inner ear.
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Palatine bones
Zygomatic arch
Palatine process
(maxilla)
Foramen
magnum
Occipital condyles
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External occipital
ptotuberance
Occipital condyles are the site of
articulation between the skull and
the 1st cervical vertebrae (atlas).
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Occipital condyles
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mandible
Palatine process
(maxillary bone)
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Palatine
bone
Palatine
bone
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Pterygoid processes
lateral
medial
medial
lateral
Pterygoid plates
(sphenoid bone)
vomer
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Foramen magnum
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maxilla
Mandibular notch
Maxillary alveoli processes
ramus
Oblique line
Mental
foramen
Mandibular alveoli processes
body
mandible
Mental protuberance
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temporalis
buccinator
masseter
mentalis
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Maxillary bone
Alveoli processes
Alveoli processes
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mandible
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FETAL
SKULL
Metopic suture
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At birth, there are 2 frontal bones
that articulate along the metopic
suture. Although the suture
generally disappears by age 8 as
the bones fuse, the adult skull
commonly retains traces of the
suture line.
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Frontal fontanel
(anterior)
Parietal bone
Frontal bone
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Parietal bone
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Parietal bone
Parietal bone
Occipital fontanel
(posterior)
Occipital bone
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Parietal bone
Sphenoidal fontanel
(anterolateral)
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Mastoidal fontanel
(posterolateral)