Parker SG (Pterygopalatine Fossa) Flashcards
What is the lateral opening of the PPF (pterygopalatine fossa)?
Pterygomaxillary Fissure
What is the medial opening of the PPF?
Sphenopalatine Foramen
What are the 9 foramina communicating with the PPF?
- Foramen Rotumdum
- Anterior opening of Pterygoid Canal
- Pharyngeal Canal
- Palatine Canal (into G and L pal. foramen)
- Sphenopalatine Foramen
- Pterygomaxillary Fissure
- Infraorbital Fissure
- Alveolar Foramen
* *#8 really is in IT fossa
What 3 foramina communicate with the posterior aspect of the Pterygopalatine Fossa?
Superior —> Inferior
- Foramen Rotundum
- Pterygoid Canal
- Pharyngeal Canal
T or F: Foramen Rotundum has an artery passing through it
False, Maxillary V2 is the only thing going through FR
Foramen Rotundum and the petrosal canal allow communication between what two areas?
Middle Cranial Fossa and Pterygopalatine Fossa
What opens the pterygopalatine fossa to the nasopharynx?
Pharyngeal Canal
What passes through the 3 posterior openings into the pterygopalatine Fossa?
Foramen Rotundum:
- Maxillary n. (V2)
Pterygoid Canal:
- N. and A. of Pterygoid Canal
Pharyngeal Canal:
- Pharyngeal Branches of Maxi. ARTERY and N.
What foramen of the pterygopalatine fossa communicates with the nasal cavity?
- What is transmitted through here?
Sphenopalatine Fossa
- Nasapalatine Nerve
- Sphenopalatine Artery
In the Pterygopalatine Fossa, does the sphenopalatine foramin open Anteriorly, Posteriorly, Medially, or Laterally?
- Opens Medially
What does the lateral Wall of the PPF consist of?
- Pterygomaxillary Fissure
What is unique about the structures conducted through the Pterygomaxillary Fissure?
- Maxillary Artery ENTERS through the Pterygomaxillary Fissure
- Superior Alveolar a. and n. EXIT through the fissures
What is the only anterior opening the the PPF?
Infraorbital FISSURE
What is conducted through the Infraorbital Fissure?
Infraorbital A. and N.
What is the past of the infraorbital a. from PPF to Face?
Infraorbital Fissure —>
Infraorbital Groove —>
Infraorbital CANAL —>
Infraorbital Foramen.
What 2 formina are located inferiorly in the PPF?
- Greater and Lesser Palatine foramina via palatine canal
What nerve brings parasympathetic Activity to the PP fossa?
- Ganglion
- Greater Petrosal N. (VII)
***Pterygopalatine Ganglion
coPs
What fiber types are found in the greater petrosal n.?
- BE SPECFIC (pregang./post gang. etc.)
GVE - Preganglionic Parasympathetics
SA - taste fibers
What areas are ultimately supplied by the Preganglionic Parasympathetics of the Greater Petrosal n.?
- Lacrimal Gland
- Nasal Cavity (minor glands)
- Soft palate (minor glands)
Where does the SA infromation in the greater petrosal n. come from?
- SOFT palate
DEEP petrosal n.
- Fiber type BE SPECIFIC
- Job**
GVE - sympathetic POSTganglionic
Job:
- VASOCONTRICTION of Blood Vessels
Path of the Greater Petrosal n.
- Exits Hiatus GPN
- Runs in Groove GPN
- CROSSES carotid canal and Foramen Lac.
- JOINS deep PN, and becomes N. of Pterygoid Canal
What fibers synapse in the Pterygopalatine Ganglion?
- ONLY Preganglionic Parasympathetics Synapse here
- SA and GVE - symp. fibers pass through
What fiber types exist in the N. of Pterygoid Canal?
GVE:
- PRE-ganglionic parasymp (VII)
- POST-ganglionic symp. (SCG)
SA:
- CN VII
What is the only branch of V1 to carry Post-ganglionic parasympathetic fibers from PPG?
- lacrimal n. (V1) via jump from zygomatic n. (?) to lacrimal n.
