Download mastoid process

‫اهداف آموزشی جلسه‬
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‫دانشجو بتواند‪:‬‬
‫بخشهاي مختلف استخوان اسفنوئيد را نام ببرد‪.‬‬
‫سطوح و كناره هاي استخوان اسفنوئيد را بيان نمايد‪.‬‬
‫سوراخها‪ ،‬ناودان ها‪ ،‬سينوسها‪ ،‬بريدگيها و زوائد استخواني‬
‫اسفنوئيد را توضيح دهد‪.‬‬
‫بخشهاي مختلف استخوان اكسيپيتال را نام ببرد‪.‬‬
‫سطوح و كناره هاي استخوان اكسيپيتال را بيان نمايد‪.‬‬
‫سوراخها‪ ،‬ناودان ها‪ ،‬حفره ها‪ ،‬بريدگيها و زوائد استخواني‬
‫اكسيپيتال را شرح دهد‪.‬‬
‫بخشهاي مختلف استخوان تمپورال را نام ببرد‪.‬‬
‫سطوح و كناره هاي بخش هاي مختلف استخوان تمپورال را‬
‫بيان نمايد‪.‬‬
Sphenoid bone
(body,greater and lesser wings, pterygoid processes)

Body
cerebral surface
-jugum
- sulcus chiasmatis
-tuberculum sellae
-sella turcica
-hypophyseal fossa
-middle clinoid process
posterior surface
-dorsum sellae
- posterior clinoid process
- petrosal process
- clivus
Sphenoid bone
Lateral surfaces
- carotid sulcus
- lingula
anterior surface
- sphenoidal crest
- sphenoidal sinus
- sphenoidal
conchae
Inferior surface
- sphenoidal
rostrum
- vaginal process
Sphenoid bone
Greater wings
cerebral surface
-foramen rotundum
- foramen oval
- foramen spinosum
-canaliculus
innominatus
-emissary sphenoidal
foramen (40%)

Sphenoid bone
lateral surface
- infratemporal crest
-spine of the sphenoid
orbital surface
margin of the greater wing
- foramen lacerum
-sphenopetrosal synchondrosis
-sulcus tubae
-squamosal margin
-pterion
Sphenoid bone
Lesser wings
- superior surface
-inferior surface
-superior orbital fissure
- anterior clinoid process
- caroticoclinoid foramen
-optic canal
 Superior orbital fissure
 Pterygoid processes
- Pterygoid fissure
- Pterygoid fossa
-scaphoid fossa
-Pterygoid canal

Lateral pterygoid plate
-lateral surface
-medial surface
- anterior border
-pterygomaxillary fissure
- posterior border
 Medial pterygoid plate
- pterygoid hamulus
- lateral surface
- medial surface
- vaginal process
-palatovaginal canal
Occipital bone
Internal surface:
- internal occipital protuberance
- superior sagital sulcus
-inernal occipital crest
- vermian fossa
- sulcus for the transverse sinus
- confluence of sinuses
Occipital bone
Lateral parts
inferior surface
-occipital condyles
-hypoglossal canal
- condylar fossa
- condylar canal
-jugular process
- jugular notch
- intrajugular process
- paramastoid process

Temporal bone
(squamus, petromastoid, tympanic and styloid parts)
Squamus part:
temporal surface:
- supramastoid crest
- suprameatal triangle
- suprameatal spine
- zygomatic process:
- ant. & post. Roots
- tubercle of the
zygomatic root

Temporal bone: Squamus part
- articular tubercle
- squamosal foramen
mandibular fossa:
- ant. Articular area
- post. Non-articular area
- postglenoid tubercle
-squamotympanic fissure
-petrotympanic fissure:
1-ant. Malleolar lig.
2- ant. Tympanic br. of the
maxillary artery
3- ant. canaliculus for the
chorda tympani
- postglenoid foramen
Temporal bone: Squamus part
Cerebral surface:
- grooves to middle
meningeal vessels
- convolutions of the
temporal lobe
- superior border
- antero-inferior border
Temporal bone: petromastoid part
Mastoid part:
outer surface:
- mastoid foramen
- mastoid process
- mastoid notch
- occipital groove

Temporal bone: Mastoid part
Inner surface:
- sigmoid sulcus
- mastoid foramen
- mastoid antrum
- superior border
- posterior border
Petrous part : base, apex, three surface
Anterior surface:
- trigeminal impression
- another hollow
- greater hiatus for the
greater petrosal nerve
- lesser hiatus for the
lesser petrosal nerve
- arcuate eminence
- tegmen tympani
Temporal bone: Petrous part
Posterior surface:
- internal acoustic
meatus
- vestibular aqueduct
- subarcuate fossa
Temporal bone: Petrous part
Inferior surface:
- quadrilateral area
- carotid canal
- jugular fossa
- triangular depression:
- cochlear canaliculus
- canaliculus for the tympanic
nerve
- mastoid canaliculus
- jugular surface
Petrous part
Superior border
-sup. Petrosal sinus
- tentorium cerebelli
posterior border
- inf. Petrosal sinus
anterior border
- lat., petrosquamosal
suture:
1- tensor tympanic
2- auditory tube
- med., articulate with
greater wing
Temporal bone
tympanic, external acoustic meatus and styloid parts
posterior surface
- ant. Wall, floor and partly post.
Wall …
- tympanic sulcus
anterior surface
- post. Wall of the mandibular
fossa
lateral border
upper border
inferior border
- sheath of the styloid process
stylomastoid foramen
styloid process
- tympanohyal
- stylohyal