Osmotic and Hydrostatic Pressure

[kfcman289]

What is exactly the purpose of these? Do they pull/ donate nutrients to tissue? Also, can someone explain the importance of the interstitial space?

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[dudewheresmymd]

at arterial end hydrostatic pressure is greater than osmotic pressure which causes a net flux of fluid from the capillary into the interstitial fluid. at the venous end osmotic pressure is greater than hydrostatic pressure which causes fluid to flow from the interstitial fluid into the capillaries. about 10% of all of this fluid transfer is lost and gained by the lymphatic system which can filter the blood for pathogens. nutrients are mostly absorbed in the colon not in interstitial fluid.

 

[benjaminl1nus]

i'll define them first

osmotic pressure = arises from the tendency for solutes to flow from a region of high solute concentration to a region of low solute concentration

hydrostatic pressure = arises from the tendency for fluid (aqueous) to flow from a region of high fluid concentration to a region of low fluid concentration

now the below should kinda make sense

at arterial end hydrostatic pressure is greater than osmotic pressure which causes a net flux of fluid from the capillary into the interstitial fluid. at the venous end osmotic pressure is greater than hydrostatic pressure which causes fluid to flow from the interstitial fluid into the capillaries. about 10% of all of this fluid transfer is lost and gained by the lymphatic system which can filter the blood for pathogens. nutrients are mostly absorbed in the colon not in interstitial fluid.

the interstitial space receives nutrients from capillaries, and these nutrients are taken up by cells. after this transfer, the fluid left behind remains in the interstitial space. if left alone, this fluid will increase and cause edema. luckily, the lymphatic system provides a drainage pipe system to prevent excess fluid from draining into the surrounding tissues/cells.

make sense?

 

[kfcman289]

i'll define them first

osmotic pressure = arises from the tendency for solutes to flow from a region of high solute concentration to a region of low solute concentration

hydrostatic pressure = arises from the tendency for fluid (aqueous) to flow from a region of high fluid concentration to a region of low fluid concentration

now the below should kinda make sense



the interstitial space receives nutrients from capillaries, and these nutrients are taken up by cells. after this transfer, the fluid left behind remains in the interstitial space. if left alone, this fluid will increase and cause edema. luckily, the lymphatic system provides a drainage pipe system to prevent excess fluid from draining into the surrounding tissues/cells.

make sense?

so those the blood get nutrients from the intersitial space (which got its nutirents from the capillaries of the small intestine), and then the blood gives the nutrients to different tissues?

 

[dyspareunia]

at arterial end hydrostatic pressure is greater than osmotic pressure which causes a net flux of fluid from the capillary into the interstitial fluid. at the venous end osmotic pressure is greater than hydrostatic pressure which causes fluid to flow from the interstitial fluid into the capillaries. about 10% of all of this fluid transfer is lost and gained by the lymphatic system which can filter the blood for pathogens. nutrients are mostly absorbed in the colon not in interstitial fluid.

The spleen filters blood for pathogens. Lymphatics filter lymph. There is no blood in lymphatics.