Tissue fluid formation

Question 1

What is blood like at the arterial end of the capillary

Answer 1

Relatively high pressure - forces water and small molecules out through the capillary wall by ultrafiltration

Question 2

What fluid moves into the spaces between the cells

Answer 2

tissue fluid (interstitial fluid)

Question 3

What do the plasma proteins that remain in the blood do and why

Answer 3

Exert and osmotic effect - draws some water back into the capillary (not enough to counteract loss due to blood pressure)

Question 4

What happens at the venous end of the capillary

Answer 4

blood under lower pressure which means osmotic pressure exerted by plasma proteins is greater than the blood pressure - netflow of water therefore into capillary inbetween spaces in cell