Anatomy of the Nose Flashcards
What are the FOUR functions of the nasal cavity?
-Warm and humidify air
-Trap and remove pathogens and particulates from inspired air
-Sense of smell
-Drain and clear the paranasal sinuses and lacrimal ducts
What are the lacrimal ducts?
Tear Ducts
What is the first part of the nasal cavity called?
Vestibule
What does the vestibule contain?
Hairs
What is the function of the vestibule?
Filter dust and other particulates
What is the second region of the nose called?
Respiratory Region
What is the function of the respiratory region?
-Warms, humidifies inspired air
-Secretes mucous
How is air and humidity maintained in the respiratory region?
Three curved shelves of bone called turbinates(concha). The air warms to body temperature and reaches about 100% humidity
What is the final region of the nose called?
Olfactory Region
What does the olfactory region contain?
Olfactory Receptors
What are the olfactory receptors involved in?
They are involved in the sense of smell. They help protect us from harm and is linked to nutrition and our sense of taste
Which region of the nose is associated with the sense of smell?
Olfactory Region
Which region of the nose is associated with filtering dust and other particulates?
Vestibule
Which region of the nose humidifies and warms inspired air?
Respiratory Region
Which region of the nose secretes mucous?
Respiratory Region
What are the curved shelves of bone in the respiratory region of the nose called?
Turbinates or Chonca
Which region of the nose is associated with nutrition and our sense of taste?
Olfactory Region
Which region of the nose protects us from harm?
Olfactory Region
What are the sinuses?
Air-filled extensions of the respiratory region of the nasal cavity
What are the 4 paired sinuses named after?
The bones that contain them
What are the names of the 4 paired sinuses?
-Frontal
-Sphenoid
-Ethmoid
-Maxillary
Where is the frontal sinus found?
Lower forehead
Where is the sphenoid sinus found?
Behind the nose
Where is the ethmoid sinus found?
Behind upper nose
Where is the maxillary sinus found?
Cheekbones
What are the FOUR main functions of the sinuses?
-Humidify-inspired air
-Reduce the weight of the skull
-Support immune defence of the nasal cavity
-Resonate speech
