Flashcards in Nasal Cavity & Nasopharynx Deck (28):
3 areas of cartilage of the nose are?
1. lateral cartilage
2. septal cartilage
3. alar cartilages
bridge of the nose is made of?
what allows air to move between nostrils?
posterior nare, rest is blocked by septal cartilage
medial wall of the nasal cavity is made from 3 major structures:
1. septal cartilage
2. cribiform plate of ethmoid
3 consequences of severe nose breaks:
Ethmoid bone involvment
2. bleeds into brain
3. rhinorrhea: CSF into nasal cavity
medial wall covered by what? why?
highly vascular mucous membrane for warming/humidifying
describe the vestibule of nostril
not mucosa or highly vascularized
skin and hair
histologically, what kind of cells are the nasal cavity made of?
ciliated pseudostratified columnar epithelial cells
lateral wall of nasal cavity features?
what do the concha do in the nose?
create turbulence for inhaled air to warm and humidify
name the 3 meatus in the nasal cavity, that do they do?
communicate with sinuses
which sinuses innervated by V1?
which sinuses innervated by V2?
why is infection more likely in maxillary sinuses?
drainage is superior rather than inferior like the other sinuses inferior
what can you get with sinusitis?
referred pain to cutaneous nerves
tears drain how?
through nasolacrimal duct out the orifice in the inferior meatus of nasal cavity
nasal cavity blood supply: posterior lateral and medial walls
nasal cavity blood supply: anterior lateral and medial walls
lateral nasal branches of facial artery
superior labial arteries
nasal cavity blood supply: inferior lateral and medial walls
greater palatine artery
nasal cavity blood supply: superior lateral and medial walls
anterior and posterior ethmoidal arteries
which nasal cavity artery bleed profusely if damaged? why?
sphenopalatine artery because branch of external carotid
nerve supply to nasal cavity:
superior: V1, nasociliary
inferior: V2, greater/lesser palatine nerves
what ganglion is in the nasal cavity?
PHarynx starts and ends where?
starts base of skull
ends at C6 cricoid cartilage
3 parts of the pharynx are?
what are the 3 constrictor muscles of the pharynx? purpose?
3 slings that attach via median raphe to help with swallowing
1. superior constrictor muscle
2. middle constrictor muscle
3. inferior constrictor muscle
what muscle to equalize pressure in auditory tube?