Download Temporal region

TEMPORAL REGION
By: Dr. Zainab Majid
Pterion
Frontal
Parietal
Greater wing of
sphenoid
Temporal
Pterygopalatine fossa
Sphenoid
Pterygopalatine fossa
Rotundum f.
Palatine
Maxilla
Alveolar foramen
A. Temporal Fossa and
B. Infratemporal Fossa
Temporal Fossa and Infratemporal Fossa
Temporal Fossa
(above zygomatic arch)
Infratemporal
Fossa
(below zygomatic arch)
Floor (Medial Wall)
parietal
frontal
greater wing of
sphenoid
temporal
(squamous
portion)
Anterior Wall
frontal bone
zygomatic bone
INFRATEMPORAL FOSSA
A. Temporal Fossa: Inferior Boundary of Medial Wall
lateral surface of
greater wing of sphenoid
infratemporal crest
Anterior View
of Sphenoid
A. Temporal Fossa: Lateral Wall and Content
Contents
temporalis muscle
Roof (Lateral Wall)
temporalis fascia
zygomatic arch
(inferior boundary
of lateral wall)
B. Infratemporal Fossa
medial
wall
(not
seen)
roof
lateral view
anterior wall
(not seen)
posterior
wall
lateral wall
postero-lateral view
(like a wedge of cheese, with
sharp edge pointing inferiorly)
Infratemporal Fossa: Lateral Wall
ramus of mandible
lateral wall
B. Infratemporal Fossa: Roof
infratemporal crest
roof
Anterior View
of Sphenoid
Roof inferior surface of greater wing
Infratemporal Fossa: Roof – Inferior View
infratemporal
crest
Anterior View
of Sphenoid
inferior surface of
greater wing of
sphenoid
roof
inferior view
B. Infratemporal Fossa: Posterior Wall
styloid process
(medially)
posterior
wall
posterior edge
of ramus of
mandible
(laterally)
B. Infratemporal Fossa: Anterior and Medial Walls
Medial Wall
spine of
sphenoid
medial
wall
lateral
pterygoid
plate
Anterior Wall
infraorbital fissure
posterior surface of maxilla
anterior wall
Infratemporal Fossa – Medial Wall (Posterior View)
lateral pterygoid
plate
medial
pterygoid
muscle
Mandibular Nerve (V3)
inferior alveolar
(motor and sensory)
nerve to mylohyoid
(and anterior belly
of digastric)
mylohyoid
anterior belly of digastric
Mandibular Nerve (V3) – Sensory Branches
Auriculotemporal
buccal
inferior
alveolar n.
(motor and
sensory
portion)
inferior alveolar n.
(sensory portion)
lingual
mental
Chorda Tympani Nerve (Br. of VII)
chorda tympani
br. of facial (VII)
lingual
Chorda Tympani Branch of Facial Nerve (VII)
foramen ovale
chorda tympani
mandibular n. (V3)
ant 2/3
tongue
lingual n.
submandibular and sublingual salivary glands
Arterial Supply of Infratemporal Fossa
deep temporal
middle
meningeal
maxillary
maxillary
external
carotid
buccal
inferior alveolar
Venous Drainage of Infratemporal Fossa
foramen ovale
pterygoid venous
plexus
superficial
temporal
vein
maxillary
veins
retromandibular
vein
facial vein
TM Joint
Temporomandibular Joint
mandibular
fossa
articular
tubercle
head
neck
condylar
process
mandibular
notch
coronoid
process
Temporomandibular Joint – Lateral View of Sagittal Section)
superior compartment
articular disk
capsule
Lateral
View
inferior compartment
Temporomandibular Joint – Posterior View of Coronal Section)
superior compartment
articular disk
inferior compartment
capsule
Temporomandiular Joint - Ligaments
lateral (temporomandibular) ligament
(resists post. displacement)
capsule
(resists ant. displacement)
sphenomandibular ligament
spine of sphenoid
stylomandibular ligament
lingula
(resists ant. displacement)
Medial View
axis of rotation
(swinging hinge)
Lateral View
Temporomandiular Joint - Movements – 1) Protrusion and Retrusion
Retrusion
Protrusion
Temporomandiular Joint – Anterior Dislocation
articular
tubercle
head and disk are inferior
to articular tubercle
head is anterior
to articular tubercle
and is elevated
further protrusion leads to
anterior dislocation
protruded position
Muscles of Mastication
Muscles of Mastication
Muscles of Mastication
Posterior View
THANKS