Transcript TEMPORAL FOSSA AND INFRATEMPORAL FOSSA
DR TAHIR HUSSAIN
Demarcate temporal and infra-temporal fossae and list their contents
EXTERIOR----------- NORMAS (VIEWS) INTERIOR
EXTERIOR OF SKULL
▪ ▪ ▪ ▪ ▪
NORMA VERTICALIS----- superior view NORMA FORNTALIS------ anterior (front) view NORMA LATERALIS------- lateral (side) view NORMA OCCIPITALIS----- posterior (back) view NORMA BASALIS---------- inferior view
Frontal Parietal Occipital Temporal Sphenoid Zygomatic Mandible
Maxilla Nasal
1. Temporal lines 2. Zygomatic arch 3. Ext. acoustic meatus 4. Suprameatal triangle 5. Mastoid part of temporal bone 6. Styloid process 7. Temporal fossa 8. Infratemporal fossa 9. Pterygopalatine fossa 3
4
5
ABOVE: Temporal lines
BELOW: Zygomatic arch
ANTERIOR WALL: Separates the fossa from the orbit
Zygomatic bone
Zygomatic process of frontal bone
Post. Surface of body of maxilla
FLOOR: Pterion
ROOF: Temporal fascia
H shaped suture
4 bones join each other
Frontal Parietal
Temporal Sphenoid
Lies:
4cmm above the midpoint of zygomatic arch
2.5 cm behind the fronto-zygomatic suture
Deep relations:
Middle meningeal V
Ant. Division of middle meningeal A Stem of lat. Sulcus of brain
1.
2.
3.
4.
5.
Temporalis Deep temporal nerve Deep temporal vessels Auriculotemporal nerve Superficial temporal vessels
ROOF FLOOR MEDIAL WALL LATERAL WALL ANTERIOR WALL
ROOF
Medially: Infratemporal surface of greater wing of sphenoid bone & Squamous temporal bone
Laterally: Gap deep to the zygomatic arch
FLOOR : O pen
MEDIAL WALL
Lateral pterygoid plate
LATERAL WALL: Ramus of mandible
ANTERIOR WALL: Posterior surface of maxilla
POSTERIOR WALL: Carotid sheath and styloid process
MUSCLES: Muscles of mastication (except massater) Lateral pterygoid Medial pterygoid Tendon of temporalis ARTERIES: Maxillary A & its branches VEINS: Pterygoid plexus of veins NERVES: Mandibular N Choda tympani N Posterior superior alveolar N GANGLIA: Otic ganglion LIGAMENTS: Sphenomandibular ligament