Ch 25A (Respiratory Tract) Flashcards
the respiratory system is anatomically divided into
upper & lower respiratory tracts
the respiratory system is functionally divided into
conducting & respiratory portions
what do the functional portions do?
air transport (conducting) & gas exchange (respiratory)
what are functions of the respiratory system?
(1) pulmonary ventilation
(2) gas exchange
(3) gas conditioning
(4) sound protection
(5) olfaction
(6) defense
what structures does the upper respiratory tract include?
(1) nose and nasal cavities
(2) paranasal sinuses
(3) pharynx
what forms the bridge of the nose?
nasal bones
another way to say nostrils
nares
what are the parts of the nasal cavity?
nasal septum & vestibule
divides nasal cavity into left and right portions
nasal septum
region just inside the nares
vestibule
this forms the lateral walls for each cavity.
superior, middle, & inferior nasal conchae
these are airspaces that make the bones lighter in weight, are named after the bones they reside
paranasal sinuses
name the four kinds of paranasal sinuses
(1) frontal
(2) ethmoidal
(3) sphenoidal
(4) maxillary
commonly called the throat, shared by respiratory & digestive tracts
pharynx
name the three regions of the pharynx
(1) nasopharynx
(2) oropharynx
(3) laryngopharynx
the pharynx is lined with
a mucosa
the pharynx has a skeletal muscle that is for
swallowing