Pressures (Oncotic & Hydrostatic)

Capillary oncotic pressure

attracts water from interstitial space into the capillary via osmosis

Net filtration

difference between oncotic and hydrostatic pressures at the vascular bed, same as Starling's forces

Oncotic pressure (blood pressure)

facilitates movement of water from intravascular space to the interstitial space

Hydrostatic pressure

facilitates the movement of water from interstitial space into capillaries

Interstitial (if speaking about the tissues) oncotic pressure

osmotically attracts water from the capillary into the interstitial space