ENT part 3 Flashcards
Saddle deformity
trauma or vascular compromise of small vessels of septal cartilage
What nourishes cartilage?
Perichondrium
Wegener’s
granulomatosis with polyangitis
Afran
reduces sinus congestion
sympathomimetic that causes vasoconstriction
Nasal cavity
a large cavity that is separated into right and left halves by a bony/cartilaginous septum
Structures of the nasal cavity
nasal concha
openings to paranasal sinuses
olfactory recess
Nasal concha (turbinates)
spiral bony structures covered in mucus membrane that fill up the nasal cavity
increase SA of sinus cavity
What is found beneath each concha?
nasal meatus
How to olfactory nerves travel
they travel through the olfactory tract in the cribriform plate on the ethmoid bone before entering the nasal cavity
Bleeding from anterior epistaxis
Keisselbachs plexus
Bleeding from posterior epistaxis
Sphenopalatine artery (mainly) and posterior ethmoidal artery
Each paranasal sinus is line with
mucosal layer of ciliated squamous epithelium
Function of paranasal sinuses
immune function, humidifying air, speech resonance, skull lightening, crumple zone for trauma
Which sinuses can you observe on exam?
Frontal and maxillary
Why should you not I & D an abscess over a sinus?
access to the brain