EricksonNorahRespritorySystem
Respiration
internal
external
exchange of gasses (CO2, O2) between blood vessels (capillaries) and lungs
exchange of gasses (CO2, O2) between blood vessels (Capillaries) and tissue cells
Inhalation (inspiration)
moving air into lungs
Exhalation (expiration)
moving air out of lungs
Tracts
Conducting
nose/mouth to respiratory bronchioles
respiratory
respritory bronchioles to alveoli
upper respritory
nose to pharynx
lower respritory
pharynx to alveoli
Parts of Respiratory System
Nasal cavity
conchae- create turbulence increase contact with mucosa, pseudo-stratified cilliated columnar epithelium
mucus membrane- cleans warm and humidify incoming air
Paranasal sinuses- mallillary ethmoid sphenoid frountal
Function- same as nasal cavity and resonates voice
Pharynx
nasopharynx, oropharynx, lyngiopharynx epithelium changes from psuedostatified cilliated columbnar epithelium to stratified squamous epithelium
Larynx
function- voice production, provides open airway,makes food and air go to the correct area
Glottis
opening between vocal folds
epiglottis
covers glottis when we swallow
vocal folds/ vocal cords
voice production
trachea
passageway fro air to get to lungs
partial rings of hylan cartilage
Location-anterior to esophagus
Bronchial tree
bronchi- large to smaller
has cartilage
psudostratified cilliated columnar epithelium
smooth muscle
Bronchioles- less than 1mm in diameter
no cartilage no cillia no mucus
Alveolar sac-exchange of gasses
Alveolar sac
type I- alveolar cells one layer of simple squamous epithelium
type II- alveolar cells 1 layer cuboidal epithelium,
produce serfactin, prevent alveolar walls from sticking together
macrophage- hang out waiting to destroy invaders
respiratory membrane- simple squamous epithelium
lungs
right- 3 lobes
left- 2 lobes with cardiac notch for heart
mediastinum
everything in thoracic cavity minus the lungs