What are the boundaries of the Infratemporal fossa?
Borders. The fossa is bordered superiorly by the greater wing of the sphenoid bone at the level of the foramina ovale and spinosum. Inferiorly, there is no bony anatomical structure to limit it, but there is the medial pterygoid muscle that runs anteriorly to attach to the mandible.
What are the openings of pterygopalatine fossa?
The posterior wall of the pterygopalatine fossa has several openings such as the foramen rotundum, the pterygoid canal and the pharyngeal canal. The foramen rotundum forms a communication between the middle cranial fossa and the pterygopalatine fossa and it conducts only one structure – the maxillary nerve.
Where is the pterygopalatine fossa located?
deep face
The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
Which bone forms the anterior border of the pterygopalatine fossa?
The ganglion resides in the pterygopalatine fossa. The fossa is bordered anteriorly by the maxillary sinus, posteriorly by the medial pterygoid plate, medially by the palatine bone, and superiorly by the sphenoid sinus.
What are the boundaries of the temporal and infratemporal fossa?
Both superiorly and posteriorly the temporal fossa is bordered by the superior temporal line (origin of the deep temporal fascia). The inferior border runs along the zygomatic arch. Lastly, the anterior border is marked by the frontal process of the zygoma and the zygomatic process of the frontal bone.
What travels through Pterygopalatine fossa?
The maxillary division of the trigeminal nerve moves through the foramen rotundum. The vidian nerve traverses through the pterygoid canal. They come together to form the pterygopalatine ganglion and then branch into the infraorbital nerve and the greater and lesser palatine nerves.
What is the Pterygopalatine Fossa function?
The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
What are content of pterygopalatine fossa?
The pterygopalatine fossa contains fat and the following neurovascular structures: pterygopalatine ganglion. maxillary artery (terminal portion), and its branches including the descending palatine artery. emissary veins.
What forms the Pterygopalatine fossa?
Gross anatomy anterior: posterior wall of the maxillary sinus. posterior: sphenoid bone (pterygoid process and inferior aspect of the greater wing) roof: incompletely formed by the greater wing of the sphenoid bone; inferior orbital fissure. floor: narrowing to palatine canals; pyramidal process of the palatine bone.
What bones form Pterygopalatine fossa?
The walls of the pterygopalatine fossa are formed by three bones of the skull:
- the maxilla.
- the palatine.
- the sphenoid.
How many pterygopalatine Fossas are there?
two pterygopalatine fossae
In human anatomy, the pterygopalatine fossa (sphenopalatine fossa) is a fossa in the skull. A human skull contains two pterygopalatine fossae—one on the left side, and another on the right side….
| Pterygopalatine fossa | |
|---|---|
| TA2 | 429 |
| FMA | 75309 |
| Anatomical terms of bone |
What is the lateral boundary of the pterygopalatine fossa?
The pterygomaxillary fissure is an opening forming the lateral boundary of the pterygopalatine fossa and connecting it with the infratemporal fossa. The pterygomaxillary fissure transmits the terminal part of the maxillary artery and the posterior superior alveolar nerve of the maxillary nerve.
What is the shape of the pterygoid fossa?
The pterygopalatine fossa (PPF), less commonly known as the sphenopalatine fossa , is a small but complex space of the deep face in the shape of an inverted pyramid located between the maxillary bone anteriorly, the pterygoid process posteriorly and inferior to the orbital apex.
Where are the foramen rotundum and the pterygoid canal located?
These two canals, along with the foramen rotundum, are the three openings in the posterior wall of the pterygopalatine fossa: Pterygoid canal – runs from the middle cranial fossa and through the medial pterygoid plate. It carries the nerve, artery and vein of the pterygoid canal.
Where does the palatine canal meet the sphenoid bone?
It is a space between the sphenoid and maxilla bones. The zygomatic branch of the maxillary nerve and the infraorbital artery and vein pass through the inferior orbital fissure. The greater palatine canal lies in the inferior boundary of the pterygopalatine fossa, and communicates with the oral cavity.