Osteology of the Skull - Sphenoid and Temporal Bones

- unpaired

- primarily endochondral ossification

The sphenoid is

sphenoid bone

Superior view: this is the

ethmoid

Superior view: this is the

occipital bone

Superior view: this is the

temporal bone

Superior view: this is the

frontal

Superior view: this is the

the groove for middle meningeal a.

This is

the carotid sulcus

This is

the clivus

This is

also the foramen spinosum

This is the

also the foramen ovale

This is the

also the foramen rotundum

This is the

of the superior orbital fissure

This is a different view

the superior orbital fissure

This is

carotid sulcus

This is the

clivus

This is the

foramen spinosum

This is the

groove for middle meningeal a.

This is the

foramen ovale

This is the

the foramen rotundum

This is

the jugum sphenoidale

Cranial fossa: this is

is the dorsum sellae

Cranial fossa: this

foramen magnum

Cranial fossa: this is the

posterior cranial fossa

Cranial fossa: this is the

petrous ridge/crest

Cranial fossa: this is the

middle cranial fossa

Cranial fossa: this is the

sphenoid bone, lesser wing

Cranial fossa: this is the

anterior cranial fossa

Cranial fossa: this is the

palatine

Inferior view: this is the

vomer

Inferior view: this is the

occipital

Inferior view: this is the

temporal

Inferior view: this is the

sphenoid

Inferior view: this is the

foramen ovale & spinosum

This is the

is the medial pterygoid plate

Pictured here

is the lateral pterygoid plate

Pictured here

is the pterygoid hamulus

Pictured here

Pterion

Lateral view: this is the

lesser wing

This is the

greater wing

This is the

the body

This is

pterygoid process

This is the

the lateral pterygoid plate

Anterior view: This is

the medial pterygoid plate

Anterior view: This is

the pterygoid hamulus

Anterior view: This is

pterygoid canal

Anterior view: This is the

foramen rotundum

Anterior view: This is the

orbital surface

Anterior view: This is the

aperture of sphenoid sinus

Anterior view: This is the

superior orbital fissure

Anterior view: This is the

greater wings

Posterior view: These are the

body

Posterior view: This is the

the lesser wings

Posterior view: These are

optic foramen

Posterior view: This is the

anterior clinoid process

Posterior view: This is the

posterior clinoid process

Posterior view: This is the

the dorsum sellae

Posterior view: This is

the hypophysial fossa

Posterior view: This is

sella turcica

Posterior view: This is the

the tuberculum sellae

Posterior view: This is

chiasmatic groove

Posterior view: This is the

jugum sphenoidale

Posterior view: This is the

inferior orbital fissure

Inferolateral view: This is the

pterygopalatine fossa (space)

Inferolateral view: This is the

pterygomaxillary fissure (opening)

Inferolateral view: This is the

pterygoid hamulus

Inferolateral view: This is the

medial pterygoid plate

Inferolateral view: This is the

lateral pterygoid plate

Inferolateral view: This is the

foramen ovale and spinosum

Inferolateral view: This is the

groove for middle meningeal a

5

tuberculum sellae

12

dorsum sellae

13

hypophysial fossa

14

is the sphenoid sinus

**

wings

sphenoid sinus

lateral pterygoid plate

medial pterygoid plate (and hamulus)

- paired bones

- petrous part = endochondral

- squamous part = intramembranous

- mastoid part = intramembranous

- tympanic part = intramembranous

Temporal bones are

petrous part

the only part of the temporal bone that is formed via endochondral ossification is the

squamous, mastoid, tympanic

these parts of the temporal bone are formed via intramembranous ossification

squamous

This is the

petrous

This is the

tympanic

This is the

mastoid

This is the

zygomatic process

This is the

anterior tubercle

This is the

mandibular fossa

This is the

anterior eminence

This is the

mastoid process (air cells within)

Mastoid part: this is the

mastoid notch

Mastoid part: this is the

mastoid foramen

Mastoid part: this is the

jugular foramen

This is the

groove for sigmoid sinus

This is the

internal acoustic meatus (canal inside bone)

This is the

internal opening of carotid canal (deep to arrow)

This is the

styloid process

This is the

stylomastoid foramen

This is the

jugular foramen

This is the

carotid foramen (to canal)

This is the