How bulk flow determines the movement of the fluid and solutes between blood and lymph

Question 1

What are the two important pressure that contribute to bulk flow out of capillaries (blood vessels)?

Answer 1

Hydrostatic pressure and colloid osmotic pressure

Question 2

What is the hydrostatic pressure?

Answer 2

There is high pressure in the blood vessels/capillaries compared to the interstitial fluid/ECF which pushes fluid out to the interstitial space.
Exerts pressure against the wall of the capillaries, driving fluid outside the capillaries
higher hydrostatic pressure= net filtration

Question 3

What is colloid osmotic pressure?

Answer 3

You need to understand this better