Temporal And Infratemporal Fosaa Flashcards
Boundaries of temporal fossa
Anterior: zygomatic and frontal bones
Posterior: inferior temporal line and supramastoid creat
Superior: superior temporal line
Inferior: zygomatic arch
Floor: frontal, pareital, temporal, greater wing sphenoid
Contents of temporal fossa (5)
- Temporalis muscle
- Middle temporal artery
- Zygomaticotemporal neeve and artery
- Deep temporal neeves
- Deep temporal nerve
Boundaries of infratemporal fossa
Anterior: posterior surface of body of maxilla
Roof: greater wing of sphenoid
Medial: lateral pterygoid plate and pyramidal process of palatine
Lateral: Ramus of mandible
Contents of infratemporal fossa
(7)
- Lateral pterygoid
- Medial pterygoid
- Maxillary artery
- Lesser petrosal
- Chorda tympani
- Mandibular nerve
- Sphenomandibular ligament
- Accompanying veins
Muscles of mastication (4)
Masseter
Temporalis
Lateral and medial pterygoid
N.S of masseter
Masseteric nerve from anterior divison of mandibular nerve
NS of temporalis
Two deep temporal nerves from anterior division of mandibular nerve
NS of Lateral pterygoid
Branch from anterior division of mandibular nerve
NS of medial pterygoid
Nerve to medial pterygoid
Action of lateral pterygoid
Depresses the mandible
Protrudes mandible
Distribution of maxillary artery(7)
1.Middle and external ears and auditory tube
2. Upper and lower jaw with teeth
3. Muscles of temporal and infratemporal regions
4. Root of pharyx
5. Dura matter
6. Palate
7. Nose and para nasal air sinuses
Maxillary artery beginning and termination
Terminal branch ECA
begins at the neck of mandible and continues as sphenopalatine artery
First part of maxillary artery(5)
Deep auricular
Anterior tympanic
Middle meningeal
Accessory meningeal
Inferior alveolar
Maxillary artery second part(4)
Masseteric
Deep temporal
Pterygoid
Buccal
Maxillary artery third part (6)
Posterior superior alveolar
Infraorbital
Greater palatine
Pharyngeal
Artery of pterygoid canal
Sphenopalatine
