Nose Flashcards
What are the bony projections of the inside of the nose called
Conchae
What forms the roof of nasal cavity
Sphenoid, ethmoid (cribiform), frontal, nasal
What forms the medial wall
Ethmoid, vomer, cartilage
What is the difference between the olfactory mucous membrane and respiratory
Olfactory- contains dendrites of olfactory nerves
Respiratory- Pseudostratified ciliated epithelium rich in goblet cells
Function of nasal cavity
Filter, humidifier, warms
Which meatus do the sinuses mostly drain into
Middle
Sensory of sinuses
Va for frontal, ethmoid, sphenoid sinus
Vb for maxillary
Neuro supply to conchae
Vb
Blood supply to nose
Branch of maxillary Sphenopalatine Greater palatine Ophthalmic artery- ethmoid branches Facial artery
What are the branches of the maxillary artery
Sphenopalatine and greater palatine
What is Keisselbach’s area
Anastomosis of arteries on cartilaginous part where 90% bleeds happen
Where does venous drainage go to
Pterygoid venous plexus, facial vein and cavernous sinus
What causes septal haematoma
Injury causing vessels to shear and therefore blood accumulates in sub pericondral space preventing blood supply to septum causing necrosis.
What can untreated septal haematoma lead to
Saddle nose deformity
What is Rhinitis
Inflammation of mucosal lining.
Congestion, sneezing
Cause: viral or allergic
