capillaries

Question 1

what are cells surrounded by

Answer 1

interstitial fluid or extracellular fluid or tissue fluid

Question 2

where do oxygen and nutrients have a high and low concentration

Answer 2

they have a low concentration in the interstitial fluid but high concentrations in the blood

Question 3

where do wastes products have a high and low concentration

Answer 3

they have a low concentration in the in the blood and a high concentration in the interstitial fluid

Question 4

what happens as blood moves through capillaries

Answer 4

blood slowly moves through the capillaries which increases the time over which diffusion takes place