Upper Respiratory System Flashcards
conducting portion
structures air can travel through
respiratory portion
gas exchange
upper respiratory tract (conducting)
- nose and nasal cavities
- paranasal sinuses
- pharynx: throat
nose is the…
main conducting airway for inhaled air
nasal bones
form bridge of nose
nares
external openings (nostrils)
nasal septum
separates left and right nasal cavity
vestibule
area inside nares
superior, middle, and inferior nasal conchae
form lateral walls for each nasal cavity (cleans air)
sinuses
air spaces that make the bones lighter in weight
paranasal sinuses
- frontal (superior)
- ethmoidal
- sphenoidal
- maxillary (largest)
pharynx
commonly known as throat
3 regions of the pharynx
- nasopharynx
- oropharynx
- laryngopharynx
- lined with mucosa and has skeletal muscle for control of swallowing
nasopharynx
posterior to nasal cavity and superior to soft palate
auditory tubes..
found in lateral walls of nasopharynx
adenoids..
housed in posterior nasopharynx
oropharynx
bounded superiorly by soft palate, inferiorly by hyoid bone
- shared passage between respiratory and digestive systems
palatine tonsils..
embedded in lateral walls between arches of oropharynx (most commonly removed)
lingual tonsils..
based of tongue
laryngopharynx
starts inferior to hyoid bone and extends to top of esophagus
- shared passage between respiratory and digestive systems