anatomy and physiology of the nose Flashcards
What is the main function of the nose
To humidify and warm, inspired air
Olfaction - smell
Immune benefits of the mucus
What is choanal atresia and why is it a significant issue
Failed recanilization of the nasal fossa during development - neonates are obligate nasal breathers so they will not be able to breathe
Hop does saddle nose deformity occur
If there is necrosis of the septal cartilage, the lateral cartilages will not have support so the saddle shape comes about
What innervates the lateral aspects of the nose
Infraorbital nerve - branch of maxillary CN V2
What innervates the nasal muscles
facial nerve - CN VII
Where is the most common area of the nose for epistaxis - nose bleed
Little’s area - Kiesselbach plexus on the anterior septum
Posterior bleeding from woodruff plexus
What is sinusitis and how long does it have to occur for to be chronic
Inflammation of the lining of the sinuses Chronic > 3 months
