Respiratory System Flashcards
Simple cilliated columnar epithelium lines ?
Segmental and large bronchioles
Psuedostratified cilliates columnar epithelium lines ? Cavity
Nasal cavity
Simple cilliated cuboidal epithelium line?
Terminal and respiratory bronchioles
Simple squamous epithelium line?
Alveolar ducts and alveoli
Parietal pleura is _ layer
Putter layer
Pleural cavity
Located between parietal and visceral pleura.
Respiratory membrane
Where capillaries touch alveolar sacs
How many type 1 cells make up one alveolar sac
About 10
Type 1 alveolar cells
Flat squamous cells tha combine to make alveolar sacs
Type 2 alveolar sacs
Produce surfactant
What does surfactant do?
Decreases the surface tension in the pleural cavities of lungs prevents then from slamming back into each other when we breath
There are ____________ in the alveolar sad to take care of anything that makes it through.
Macrophages, at least 1 per sac
Pressure when we breath in
Lower inner pressure than putter
Pressure when we breath out
Higher inner pressure than outter
Constant pressure
Atmospheric pressure=760mmHg
Transmural pressure gradient
“Across-wall” how we manipulate the pressure inside alveoli
Accomplished by pleura my lung is stuck to my body lungs want to collapse but cavity won’t let it
Boyles law
When temp is constant pressure varies inversely with pressure P=1/V
Positive pressure
Pressing air in, filling balloon,ventilator
Negative pressure
Pressing air out. Exhaling,vaccuum
