NASAL CAVITY Flashcards
Three parts of the nasal cavity
Olfactory region, respiratory region, nasal vestibules
What is the medial wall formed by
Septal cartilage, perpendicular part of ethmoidal bone, vomer and nasal crests of maxilla and palatine bones
What is the floor of the nasal cavity formed by
Horizontal plate of palatine, soft palate
What is the external nost formed by
Cartilage and nasal bone
What forms the roof
Sphenoid, cribiform plate of ethmoid, nasal spine of frontal, nasal bone
Describe the middle part of the ethmoidal bone
Perpindicular plate, cribiform plate, crista gallae.
What turbinate bones are part of the ethmoid
Superior and middle
What drains above the superior conchae
Sphenoid sinus (into spheno ethmoidal recess)
What drains between middle and superior
Posterior ethmoidal cells
What drains between inferior and middle
Frontal, maxillary, anterior and middle ethmoidal cells
What passes through the foramen cecum
aNTERIOR ETHMOIDAL ARTERY AND ETHMOIDAL VEIN
Blood supply to nasal cvity
Sphenopalatine, ethmoidal arteries, lateral nasal, greater palatine arteries
What arteries in teh nasal cavity are from teh internal carotid (opthlamic) and thus epitaxis due to increased ICP
Ethmoidal
Where fo nasal cavity lymphatics drain to
Submandibular glands
How can an infection spread from nasal cavity to meninges
Via ethmoidal vein travelling through foramen cecuM
Which sinuses drain to the middle meatus
Frontal sinus, maxillary sinus, anterior and middle ethmoidal cells
What drains into the inferior meatus
Nasolacrimal duct
What drains into the superior meatus
Posterior ethmoidal cells
What drains into the sphenoethmoidal recess
The sphenoid sinus
Which sinuses drain to the middle meatus
Frontal sinus, maxillary sinus, anterior and middle ethmoidal cells
What drains into the inferior meatus
Nasolacrimal duct
What drains into the superior meatus
Posterior ethmoidal cells
What drains into the sphenoethmoidal recess
The sphenoid sinus
Which sinuses drain to the middle meatus
Frontal sinus, maxillary sinus, anterior and middle ethmoidal cells
