Infratemporal and pterygopalatine fossa 10/24/16 TEST #3 Flashcards
What branch of the trigeminal nerve goes through the infratemporal fossa?
CN V-3 via foramen ovale
What artery goes through the foramen spinosum and is found in the infratemporal fossa?
Middle meningeal
Is the infratemporal fossa lateral or medial on the skull?
Lateral
What space is medial to the infratemporal fossa?
Pterygomaxillary fissure
What space is medial to the pterygomaxillary fissure?
Pterygopalatine fossa
What space is medial to the pterygopalatine fossa?
Sphenopalatine foramen
What space is medial to the sphenopalatine fossa?
Nasal cavity
What nerve traverses through the pteryotympanic fissure?
Chorda tympani
What is important about the mandibular fossa?
It is an articulation place for the TMJ
What structures are involved with the TMJ?
Mandibular fossa
- Articular disc
- Mandibular condyle
- Joint capsule
What is between the head of the condyle and the mandibular fossa?
Articular disc
Contraction of what muscle pulls both the condylar head and articular disc anterioinferioly to depress the mandible?
Lateral Pterygoid
What are the muscles of mastication?
- Temporalis
- Masseter
- Medial pterygoid
- Lateral pterygoid
What innervates the muscles of mastication?
V3
What portions of the maxillary artery run in the infratemporal fossa?
- Mandibular
- Pterygoid
Where do you find pterygoid plexus of veins?
Infratemporal fossa
What part of the maxillary artery do you fine in the pterygopalatine fossa?
Pterygopalatine part
What nerve passes through the pterygopalatine fossa?
Maxillary nerve V2
What ganglia do you find in the pterygopalatine fossa?
Pterygopalatine ganglion
Where does the Maxillary nerve of the trigeminal nerve enter the pterygopalatine fossa through?
Foramen rotundum
What is the first branch off of the maxillary nerve that is found in the pterygopalatine fossa?
Posterior superior alveolar nerve (PSA)
What is the second branch off of the maxillary nerve found in the pterygopalatine fossa?
-Zygomatic nerve
What does the zygomatic nerve branch into?
- Zygomaticotemporal
- Zygomaticofacial
What additional nerve runs with the zygomatic nerve?
-Greater Petrosal nerve (lacrimal gland)
What nerves branch towards the palate in the pterygopalatine fossa?
- Greater palatine nerve
- Lesser palatine nerve
What is a nerve that branches from the greater and lesser palatine nerves and projects anteriorly?
Nasopalatine nerve
What nerve from the maxillary nerve runs most anteriorly?
Infraorbital nerve
What two nerves branch off of the infraorbital nerve?
- Anterior superior alveolar nerve
- Middle superior alveolar nerve
What two nerves are Vidians nerve?
- Greater petrosal nerve
- Deep petrosal nerve
How does Vidians nerve enter the pterygopalatine fossa?
Pterygoid canal
What does the greater petrosal nerve branch off of?
Facial nerve CN VII
How do you find the pterygoid canal?
Go just below the medial pterygoid and posterior and look for a hole
How do you find the palatovaginal canal?
It is usually between the vomer and the medial pterygoid
What runs through the palatovaginal canal?
The pharyngeal branch of the maxillary artery and nerve
What is another name for the palatovaginal canal?
pharyngeal canal
What branch of CN VII leaves from the internal acoustic meatus and goes to the greater petrosal hiatus?
Greater petrosal nerve
What does the lesser petrosal nerve do?
Parotid gland
Where does the lesser petrosal nerve leave the skull at?
lesser petrosal hiatus
T/F
The greater petrosal nerve enters back through the pterygoid canal
True
Where does the otic ganglia sit?
Infratemporal fossa
What nerve do the major ganglia of the head run with?
CN V
What are the four major parasympathetic ganglia found in the head?
- Ciliary ganglia
- Petrygopalatine
- Otic
- Submandibular
What is the sympathetic ganglia found in the head?
Superior cervical ganglion
T/F
Sympathetics synapse in the parasympathetic ganglia before going to their target
False
-They synapse at the superior cervical ganglia but do pass through the parasympathetic ganglia
Is the deep petrosal nerve sympathetic or parasympathetic?
sympathetic
What are all the nerves found in the pterygopalatine fossa?
- Maxillary of V
- Nasopalatine
- Zygomatic
- Pharyngeal nerve
- Greater petrosal nerve
- deep petrosal nerve
- Descending palatine nerve
- Posterior/Middle, and anterior superior alveolar nerve
- Infraorbital nerve
What are all the arteries found in the pterygopalatine fossa?
- Sphenopalatine
- Pharyngeal
- Artery of the pterygoid canal
- Maxillary artery
- descending palatine
- greater and lesser palatine
- infraorbital
- Anterior and middle superior alveolar artery
- Posterior super alveolar artery
Where does the pharyngeal artery pass through?
Palatovaginal canal aka pharyngeal canal
Where does the descending palatine artery leave the pterygopalatine fossa from?
-Palatine canal
What two things pass through the pharyngeal canal?
- Pharyngeal nerve
- Pharyngeal artery
