upper respiratory tract Flashcards
what are the organs of the upper respiratory tract?
nose
nasal cavity
oral cavity
pharnyx
larynx
Trachea
bronchi
lung
what does pharynx continue as?
esophagus
what does larynx continue as?
trachea
what level of vertebrae does pharynx and larynx end at?
C6
in relation to the cricoid cartilage where does the pharynx and larynx end?
lower border of cricoid
where does the upper respiratory tract extend from?
from the nose to the larynx
what does the lower respiratory tract extend from?
from larynx and whats below it
what are the cavities above and below the palate and whats the relationship between them and the palate?
above the palate is nasal cavity —> palate will form the floor of the nasal cavity
below the palate is oral cavity –> palate forms the roof of oral cavity
what forms the roof of the nasal cavity?
ethmoid bone —-> cribriform plate of the ethmoid bone
what does the roof of the nasal cavity contain?
olfactory nerve
which cranial nerve is olfactory nerve?
cranial nerve 1
what is the shortest and fastest cranial nerve?
cranial nerve 1 –> olfactory nerve
Fastest because it has to cross less area = why drug addicts sniff drugs for fast results
whats the extension of the dorsum of the nose?
extends from the root to the apex
whats the opening of the nose called?
nostril
what forms the anterior part of the nostril?
Anterior nasal apertures
Nares
what forms the lateral part of the nostril?
alae of the nose
what are the 2 main components of the nose?
bone
hyaline cartilage
wheres the bone located and whats the characteristitc of it?
the bone part is the bridge of the nose
Posteriorly found
it is immovable
wheres the hyaline cartilage part found and whats the characteristic of it?
its the anterior part in front of the bone part
it is movable / mobile
whats the function of the hyaline cartilage part?
it provides protections
when you break your nose only the posterior boney part ( bridge ) is broken because the hyaline cartilage part offers protection
what forms the floor of nasal cavity?
palate
what divides the nasal cavity into right side and left side?
nasal septum ( medial wall )
what forms the anterior part of the nasal septum?
septal nasial cartilage
what forms the upper posterior part of the nasal septum?
perpendicular plate of the ethmoid bone