Where in the nasal cavity are the olfactory regions located?
Apex
What type of epithelium line the nasal cavity?
Pseudo stratified columnar epithelium
Name the three structures that combine to form the nasal septum?
Cartilage
Perpendicular plate of ethmoid bone
Vomer
What structure does the olfactory bulb pass through?
Cribiform plate
What is the main function of the conchae?
Maximise surface area for air conditioning
Name the four paranasal sinuses?
Frontal
Sphenoidal
Ethmoidal
Maxillary
Name the largest paranasal sinus?
Maxillary
Which sinuses drain into the sphenoethmoidal recess?
Sphenoidal
Which sinuses drain into the superior meatus?
Ethmoidal (posterior)
Which sinuses drain into the middle meatus?
Ethmoidal (anterior and middle)
Frontal
Maxillary
What drains into the inferior meatus?
The nasolacrimal duct
Name the vascular branches from the internal carotid which supplies the nose?
Anterior Ethmoidal artery (branch of the opthalmic artery)
Posterior Ethmoidal artery (branch of the opthalmic artery)
Name the four vascular branches of the external carotid artery which supply the nose?
Sphenopalatine artery (Maxillary branch)
Greater palatine artery (Maxillary branch)
Superior labial artery (Facial branch)
Lateral nasal artery (Facial branch)
Name the region in which epitaxis is most commonly the origin?
Little’s area
Which nerve carries the sensation of smell?
CN I - Olfactory
Which nerve supplies the general innervation to the nose?
V1 - Opthalmic
V2 - Maxillary
Name the branch of V2 which supplies the nasal septum?
Nasopalatine branch of V2
Name the branch of V2 which supplies the lateral nasal wall?
Infraorbital branch of V2
What does the greater palatine branch of V2 supply?
Hard palate
Posterior inferior nose
Name the branch of V2 which supplies the soft palate?
Lesser palatine branch of V2
Starting from the pterygopalatine fossa describe the route taken by the greater palatine artery?
Passes onto the roof of the oral cavity via the greater palatine foraman, it then passes forward on the under surface of the palate and up through the incisive foraman to the nasal cavity
