Flashcards in Fluid shift across the capillary wall Deck (16)
What makes up 75% of extracellular fluid?
What does interstitial fluid act as?
Go-between between blood and body cells
What regulates regional blood flow to the capillary bed in most tissues?
what regulates blood flow to capillaries in few tissues?
How does water soluble substances diffuse into capillaries?
Move via concentration gradient in pores of capillaries
How do lipid-soluble substances diffuse into capillaries?
Pass through endothelial cells
How do exchangeable proteins diffuse into capillary?
via vesicular transport
What can not pass through capillary walls?
What are the 2 main pressures In capillaries?
- colloid osmotic (oncotic)
What do plasma proteins do?
Drag fluid from interstitial into capillary
What do starling forces favour?
Filtration at arteriolar end and reabsorption at venular end
where is the fluid absorbed when not all fluid is absorbed at venues?
Lymphatic system and returned to circulation as lymph
What does lymphatic drainage prevent?
accumulation of interstitial fluid
what is oedema?
accumulation of fluid in interstitial space
What occurs do diffusion distance in pulmonary oedema?
Diffusion distance increase and gas exchange is compromised