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infratemporal fossa

WVSOM -- Gross Anatomy -- Infratemporal Fossa and Submandibular Triangle

QuestionAnswer
How is the mandible connected to the temporal bone? TMJ
What two ligaments connect teh skull and mandible Lateral TMJ ligament, stylomandibular and sphenomandibular ligaments
What ligament connects the hyoid and styloid process of the temporal bone? stylohyoid ligament
What does V3 innervate for motor action besides the muscles of mastication? mylohyoid, anterior body of digastric, tensor veli palatini and tensor tympani muscles
How do parasympathetic signals from the facial and glossopharyngeal nerves get to glandular targets? piggy back on fibers of V3
How do parasympathtetics from the glossopharyngeal nerve leave CNIX? lesser petrosal nerve
Where does the lesser petrosal nerve synapse? otic ganglion
Where is the otic ganglion? medial surface of the mandibular nerve
How do post synaptic parasympathetics get to teh parotid gland? auriculotemporal nerve
What are the sensory branches of V3? dural branch of V3, auriculotemporal nerve, lingual nerve, inferior alveolar nerve adn the bucal nerve
What are the muscles of teh submandibular triangle? mylohyoid, anterior belly of teh digrastric, geniohyoid
What innervates mylohyoid and anterior belly of digastric? v3
What innervates geniohyoid c1
What is the action of mylohyoid pulls the hyoid bone anteriorly
What is the action of the anterior belly of teh dygastric? elevates teh hyoid bone adn opens the mouth
What is the action of the geniohyoid? pulls the hyoid anteriorly
What is the action of the posterior belly of teh digastric? elevates the hyoid bone and opens teh mouth
What innervates the posterior belly of the digastric? VII
What is the action of stylohyoid? elevates the hyoid bone
What innervates sylohyoid? VII
What glands are in the submandibular triangle? submandibular and sublingual
What innervates the sublingual and submandibular gland? facial neve via the chorda tympani and post synaptic fibers from teh submandibular ganglion
How do parasympathetics get to the sublingual and submandibular gland? parasympathetics from facial never leave CN VII as chorda tympani and follow lingual nerve to synaps in submand ganglion. post-synaptic then travel via lingual nerve
Where do sublingual glands have small openings? lingual fold
Where do submandibular gland have openings just one large opening at the sublingual caruncle
Where does the parotid duct empty? near 2nd upper molar
How is the palatine tonsil sandwiched? palatoglassal and palatopharyngeal folds
What are the muscles of the tongue? palatoglossus, genioglossus, hyoglossus, styloglossus and the intrinsic muscles of the tongue
What is the function of the palatoglossus muscle? elevates teh tongue and depresses the palate
What is the function of the genioglossus muscle? depresses the tongue
What is the function of teh styloglossus? elevates the tongue
What is the function of the intrinsic muscles oriented in many different directions and perform "acrobatic maneuvers"
What is the innervation for palatoglossus? Vagus
How is the tongue supplied blood? lingual artery and drained by the lingual vein
what bones and landmarks make up the infratemporal fossa? temporal bone, lateral pterygoid plate of sphenoid bone, pterion, pterygomaxillary fissure and sphenopalatine foramen
Created by: tjamrose