Within systemic capillaries, substances such as oxygen, hormones, and nutrients move by from their relatively concentration in the blood into the interstitial fluid and then into the tissue cells, where the concentration of these materials is

diffusion, higher , and Lower.

Explanation:

Within systemic capillaries, substances such as oxygen, hormones, and nutrients move by diffusion from their relatively higher concentration in the blood into the interstitial fluid and then into the tissue cells, where the concentration of these materials is lower.

We now that diffusion is process of movement of solute molecules from a region of higher concentration to region of lower concentration. That is against the concentration gradient.

50.23 i believe is correct but don't quote me on that.