Question

drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal.
what immediate response would the blood cells have in this condition?
○ cells swell as water moves into them.
○ cells swell as water moves out of them.
○ cells shrivel as water moves out of them.
○ cells shrivel as water moves into them.

Explanation:

When the sodium concentration in the blood is lower than normal (a hypotonic environment compared to the inside of blood cells), water moves into the cells by osmosis. Osmosis is the movement of water from an area of lower solute concentration (the blood with low sodium) to an area of higher solute concentration (inside the blood cells). As water moves into the cells, they swell.

Answer:

Cells swell as water moves into them.