Anatomy Flashcards
Which meatus has the most sinus openings?
Middle meatus
What are the sinus openings of the middle meatus??
- bony elevation = bulla receives posterior ethmoidal sinus
- hiatus semilunaris :frontal+ anterior ethmoid
:infudibulum
:2 openings of maxillary air
sinus
What does the inferior meatus receive and what is it guarded by?
Received the nasolacrimal duct guarded by valve of hasner
Nerve supply to nasal septum branches from which ganglion?
Pterygopalatine ganglion
Site of nasal septum with arterial anastomosis
Littles area A.K.A. Keselbachs plexus
Epistaxis is caused due to?
Vasodilation or local trauma
What are the pneumatic bones?
Frontal
Ethmoid
Sphenoid
Maxillary
Pituitary tumors can be removed through which air sinus?
Sphenoidal air sinus
What kind of epithelium lines the nasal mucous membranes?
Pseudostratified ciliated columnar epithelium
Space above superior concha?
Sphenoethmoidal recess
Tumor in sphenoidal air sinus can compress what when moved in one of 3 direction
Upward- pituitary
Side- brain
Down- nasopharyngeal
Tumor in maxillary sinus can cause?
Affects eye (diplopia) and the upper jaw
Why the maxillary sinus is the most commonly infected?
- large in size
- poor natural drainage as openings are higher then the floor
- mucociliary current is not there as cilia may fall off
How do you drain the content from maxillary sinus?
Hiatal approach or antral puncture
Most sensitive part of trachea
Carina
