Stevens- fluid movement through the lungs Flashcards
cells that cover majority of surface area of alveolus
Type I pneumocytes
cells that sit in corner of alveolus
Type II pneumocytes
_______actively move Na+, and therefore
water, from the airspace into
the interstitial space to keep the
alveolus dry
alveolar epithelial cells
what moves fluid from capillary into interstitial space
hydrostatic forces
f
fibroblasts (that secrete collagen in interstitium)
Ep
en
bm
Ep: epithelium of aveoli
bm: basement membrane
en: endothelium of capillaries
semi-permeable ____ cell barrier
endothelial
tight ____ barrier (absorption)
epithelial
bronchovascular bundle
bronchovascular bundle
fluid in space around pulm artery in what
periarterial cuffs
fluid drawn through interstitium by ____ pressure
negative pressure
interstitium contains what
lymphatics
In circumstances of high flow, high permeability, or impaired lymphatic clearance, we can see accumulation of fluid around arteries or veins in what areas
perivascular cuffs
safety factor for too much fluid in the lung
perivascular cuff before edema happens