Infratemporal fossa torres
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The infratemporal fossa is located lateral to the lateral pterygoid plate and contains muscles like the temporalis and lateral pterygoid. It is bounded by bones including the mandible, sphenoid, and palatine. The maxillary artery and its branches supply the fossa, along with nerves like V3. The fossa contains the temporalis muscle, pterygoid muscles, maxillary artery branches, and the pterygoid venous plexus.
Infratemporal fossa torres
- 3. Borders Structures Lateral Ramus of the mandible and coronoid process of the mandible Medial Lateral pterygoid plate of the sphenoid, the superior constrictor muscle, and the pyramidal process of the palatine bone Superior Infratemporal surface of the greater wing of sphenoid with the foramen ovale and foramen spinosum Anterior Posterior portion of the maxilla Posterior Styloid process and condylar process of the mandible Inferior No anatomic floor as the boundary of the fossa ends where the medial pterygoid attaches to the mandible
- 4. Contents of Infratemporal Fossa
- 5. Contents of Infratemporal Fossa
- 6. Contents of Infratemporal Fossa Muscles 1. Temporalis 2. Lateral pterygoid 3. Medial pterygoid Arteries 1. Maxillary and its branches Veins 1. Pterygoid plexus of veins and tributaries
- 7. Contents of Infratemporal Fossa Nerves 1. V3 and branches 2. Posterior superior alveolar 3. Chorda tympani 4. Otic Ganglion 4. Lesser petrosal
- 8. Vascular Supply I. Maxillary Artery
- 9. Vascular Supply I. Maxillary Artery
- 10. Vascular Supply I.A. 1st part (Mandibular part) -Passes between the ramus of the mandible and the sphenomandibular ligament
- 11. Vascular Supply I.A. 1st part (Mandibular part) 1. Deep auricular Supplies TMJ 2. Anterior tympanic Aids in supplying the tympanic membrane along with some branches of the internal carotid artery 3. Middle meningeal Divides into anterior and posterior branches to supply the meninges 4. Accessory Supplies the trigeminal ganglion and dura meningeal mater 5. Inferior alveolar Supplies the dental alveoli
- 12. Vascular Supply I.B. 2nd part (Pterygoid part) - Passes obliquely and anterosuperiorly between the ramus of the mandible and insertion the the temporalis muscle
- 13. Vascular Supply I.B. 2nd part (Pterygoid part) Branches supply the muscles of the same name: 1. Anterior and posterior deep temporal 2. Masseteric 3. Pterygoid 4. Buccal
- 14. Vascular Supply I.C. 3rd part (Pterygopalatine part) Passes from the infratemporal fossa into the pterygopalatine fossa via the pterygomaxillary fissure
- 15. Vascular Supply I.C. 3rd part (pterygopalatine part) 1. Posterior superior Supplies the molars and alvelar premolars, lining of the maxillary sinus and the gums
- 16. Vascular Supply II. Pterygoid Plexus •An extensive network of veins that parallel the 2nd and 3rd parts of the maxillary artery •Receives branches that correspond with the same branches of the maxillary artery •The tributaries of the pterygoid p;exus eventually converge to form a short maxillary vein •Communicates with the cavernous sinus, pharyngeal venous plexus, facial vein via the deep facial vein, and ophthalmic veins