LAB Nose And Palate Flashcards
Where is the exit of the maxillary sinus?
Right below the middle nasal concha
Why is the sphenopalantine foramen important?
The sphenopalantine artery with is the terminal branch of the maxillary artery
What is the choanae?
Opening from the pharynx into the nasal cavity
Where is the sphenoethmoidal recess?
Right by the opening to the sphenoid sinus
What duct runs underneath the middle conchae?
The frontonasal duct in the hiatus semilunaris
What is the ethmodial bulla?
The blister of the ethmodial sinus
Behind the middle nasal conchae
What structures are located in the top and bottom part of the hiatus semilunaris?
Top - frontonasal duct
Bottom - maxillary sinus opening
Where is the nasolacrimal duct?
Behind the inferior nasal conchae
Reason why your nose runs when you cry
What ganglion is found in the pterygomaxillary fossa in the pterygopalatine foreman?
The pterygopalatine ganglion
A motor ganglion of the facial nerve
Kinda off V2
Postganglionic cell bodies
What comes off of the pterygopalatine ganglion?
The greater and lesser palatine nerves below
And the nerve of the pterygoid canal heading posteriorly
Where is the greater palatine foramen?
In the hard palate
Where is the greater palatine canal?
By the middle nasal conchae
What are the nasal cavity and hard palate supplied by (nerve)?
Maxillary division of the trigeminal
Where are the preganglionic nerves of the pterygoid canal?
It is the parasympathetic part of CN VII
In the pterygopalatine ganglion
Fibers go with every nerve out
What are the other sensory nerves of the nasal cavity?
Anterior and posterior ethmodial
Of V1
What nerve senses hot stuff in the mouth?
The nasopalatine nerve going through the incisive canal
What are the two terminal branches of the maxillary artery?
The sphenopalantine artery
And the greater and lesser palatine arteries
Where is the sympathetic part of the facial nerve coming from?
The superior salvitory nucleus
What nerve from the facial nerve of the superior salvitory nucleus terminates in the pterygopalatine ganglion and what does it carry?
The greater petrosal nerve carrying preganglionic parasympathetic nerve fibers to the lacrimal duct after terminating in the pterygopalatine ganglion and also going wherever maxillary arteries go
Where do the sympathetic fibers for the pterygopalatine ganglion come from?
The superior cervical ganglion
Where does the osmium of the maxillary sinus open?
Middle meatus
Which sinus does not drain into the middle meatus?
Sphenoid sinus
What sinuses drain into the middle meatus?
Ethmodial
Frontal
Maxillary
What is the nasal septum formed by?
The septal cartilage
Vomer
And the perpendicular plate of the ethmoid bone
Where does CSF usually escape from a fracture?
Ethmoid bone
What is the opening of the nasal cavity into the nasopharynx?
The choanae
Where does the ethmoid sinus drain?
In the sphenoethmoidal recess
Where is the nasolacrimal duct opening?
Underneath the inferior meatus
From what does the later-dorsal and lateral nasal wall receive innervation?
CN 1 of the ethmodial nerve
V1 and V2
What nerve supplies sensory info to the bridge of the nose?
Ophthalmic division of trigeminal
Where is the sphenopalantine foramen located?
In the pterygopalatine fissure
What artery passes through the pterygomaxillary fissure?
Maxillary artery
Where is the pterygopalatine ganglion found?
In the medial portion of the pterygomaxillary fissure
What three nerves come off of the pterygopalatine ganglion?
Greater and lesser palatine nerves caudally
Nerve of the pterygoid canal dorsally
What nerves are found in the pterygoid canal?
Postganglionic sympathetic neurons
Preganglionic parasympathetic neurons
Where do parasympathetic neurons innervating the nasal mucosal glands have their cell bodies?
The pterygopalatine ganglion
Where do parasympathetic neurons innervating the secretory cells of the lacrimal gland have their cell bodies?
Pterygopalatine ganglion
What do the parasympathetic fibers of the pterygopalatine ganglion do?
Innervate the nasal mucosa and the secretory cells of the lacrimal glands
Where do sensory neurons to the roof of the hard and soft palate have their cell bodies?
Trigeminal ganglion
What blood vessel supplies the soft and hard palate?
Maxillary artery
What nerve innervates the mouth immediately posterior to the incisor teeth?
The nasopalatine nerve
