Infratemporal and Pterygopalatine Fossae Flashcards

Flashcards covering the anatomy of the infratemporal and pterygopalatine fossae, including their boundaries, contents, and related structures.

What is the anterior wall of the infratemporal fossa?

Posterior surface of the maxilla

What forms the roof of the infratemporal fossa?

Greater wing of the sphenoid

What is the medial wall of the infratemporal fossa?

Lateral pterygoid plate

What is the lateral wall of the infratemporal fossa?

Ramus of the mandible

What forms the posterior wall of the infratemporal fossa?

Styloid apparatus

What comprises the floor of the infratemporal fossa?

Medial pterygoid muscle

What are the contents of the infratemporal fossa?

Pterygoid muscles, sphenomandibular ligament, mandibular nerve, otic ganglion, maxillary artery, pterygoid plexus of veins, pterygomandibular space, styloid apparatus

Which muscles are found within the pterygoid muscles?

Lateral and medial pterygoid

Where does the sphenomandibular ligament originate?

Spine of the sphenoid

Where does the sphenomandibular ligament insert?

Lingula and adjacent margin of the mandibular foramen

What are the branches of the anterior trunk of the mandibular nerve?

Buccal nerve, masseteric nerves, deep temporal nerves, nerve to lateral pterygoid

What are the branches of the posterior trunk of the mandibular nerve?

Auriculotemporal nerve, lingual nerves, inferior alveolar nerve and mental branch

What duct is associated with the submandibular gland?

Wharton's duct

Which nerve provides parasympathetic innervation to the parotid gland via the otic ganglion?

Lesser petrosal nerve

What are the branches of the maxillary artery?

Auricular and anterior tympanic arteries, middle and accessory meningeal arteries, inferior alveolar artery and mental branch, deep temporal, masseteric, buccal branches, lingual branch

Which veins connect to the pterygoid plexus?

Ophthalmic and Angular veins

Where does the Pterygoid Plexus of Veins drain?

Cavernous sinus

Which nerves are located in the pterygomandibular space?

Lingual nerve, Inferior alveolar nerve, Buccal nerve

What structures compose the styloid apparatus?

Stylohyoid ligament, Stylomandibular ligament, Stylopharyngeus muscle, Styloglossus muscle, Stylohyoid muscle

What are the spatial relationships of the pterygopalatine fossa?

Posterior to maxilla, Lateral to nasal cavity, Medial to ITE, Inferior to orbit, Superior to palate

What are the contents of the pterygopalatine fossa?

Maxillary nerve, Pterygopalatine ganglion, Maxillary Artery

What are the branches of the maxillary nerve?

Infraorbital and Anterior superior alveolar nerve, Medial and posterior superior alveolar nerves, Zygomatic nerve

What are the branches of the zygomatic nerve?

Zygomaticotemporal and Zygomaticofacial branch

What are the branches of the pterygopalatine ganglion?

Greater palatine nerve, Lesser palatine nerve, Nasal nerves, Nasopalatine nerve

What are the branches of the maxillary artery in the pterygopalatine fossa?

Infraorbital artery, Palatine branch, Nasal branch, Pharyngeal branch, Artery of the pterygoid canal, Posterior superior alveolar branch

What is the anterior border of the infratemporal fossa?

Posterior surface of the maxilla

What forms the roof of the infratemporal fossa?

Greater wing of the sphenoid bone

What is the medial wall of the infratemporal fossa composed of?

Lateral pterygoid plate

What forms the lateral boundary of the infratemporal fossa?

Ramus of the mandible

Which structure creates the posterior wall of the infratemporal fossa?

Styloid apparatus

Which muscle composes the floor of the infratemporal fossa?

Medial pterygoid muscle

What nerves arise from the anterior trunk of the mandibular nerve (V3)?

Branches including buccal, masseteric, deep temporal, and nerve to lateral pterygoid

Are the auriculotemporal, lingual, and inferior alveolar nerves from the anterior or posterior trunk?

Originate from the posterior trunk of V3

Which nerve synapses at the otic ganglion?

Lesser petrosal nerve

Which nerve carries postganglionic parasympathetic fibers from the otic ganglion to the parotid gland?

Auriculotemporal nerve

Which artery is a branch of the first part of the maxillary artery?

Middle meningeal artery

What network of veins is located in the infratemporal fossa?

Pterygoid plexus

Which ligament spans from the spine of the sphenoid bone to the lingula of the mandible?

Sphenomandibular ligament

Which muscles originate from the styloid process?

Styloglossus, stylohyoid, and stylopharyngeus muscles

What is the general shape of the pterygopalatine fossa?

An inverted pyramid shape.

Which division of the trigeminal nerve passes through the pterygopalatine fossa?

Maxillary nerve (V2)

Which nerve branches into the zygomaticotemporal and zygomaticofacial nerves?

Zygomatic nerve

Which nerves pass through the palatine foramina to supply the palate?

Greater and lesser palatine nerves

Which artery supplies blood to the pterygopalatine fossa?

Maxillary artery

Which artery passes through the pterygoid canal?

Artery of the pterygoid canal

Which artery is the terminal branch of the maxillary artery that supplies the nasal cavity?

Sphenopalatine artery

Into what does the Pterygomaxillary fissure provides access

Inferior orbital fissure

Which trigeminal nerve division travels through the pterygopalatine fossa?

Maxillary nerve (V2)

Which branch of V2 innervates the maxillary molars?

Posterior superior alveolar nerve

What is called the Grand Central Station of the Head

The pterygopalatine ganglion

Which nerve is found in the pterygomandibular space?

Lingual nerve