Question

Describe and explain how water is exchanged between the blood and tissue fluid as blood flows along the capillary. ( 4 marks)

Accepted Answer

HP forces water out; idea that HP is “higher” than WP; proteins remain in blood (increases WP); idea that WP is now “higher” than HP; water returns by osmosis / along WP gradient; water moves out at arteriole end and back in (at venule end);

Front	Describe and explain how water is exchanged between the blood and tissue fluid as blood flows along the capillary. ( 4 marks)
Back	HP forces water out; idea that HP is “higher” than WP; proteins remain in blood (increases WP); idea that WP is now “higher” than HP; water returns by osmosis / along WP gradient; water moves out at arteriole end and back in (at venule end);

Water Blood Hp Idea Higher Wp Describe Explain