Contraction of the ventricle caused high hydrostatic pressure so the net force is outwards
Forces water and small soluble molecules out of capillaries
Large plasma proteins and red blood cells remain in the capillaries
Explain how tissue fluid is re absorbed
As blood flows to venule end
Lower hydrostatic pressure due to reduced blood volume and friction
Due to water loss and therefore Increased concentration of plasma proteins in the blood the water potential is reduced the large inward osmotic pull is greater than hydrostatic pressure due
Water enter capillaries from fuss fluid by osmosis down a water potential gradient
Excess tissue fluid not absorbed is then drained by lymphatic vessels
Why is more tissue fluid formed at arteriole end when water potential reduces
This reduces the osmotic pressure inwards so theirs a larger net force outwards as hydrostatic pressure outwards remain same forcing more water out
