Osmoregulation and Osmotic Balance

Review Questions

When a dehydrated human patient needs to be given fluids intravenously, he or she is given:

  1. water, which is hypotonic with respect to body fluids
  2. saline at a concentration that is isotonic with respect to body fluids
  3. glucose because it is a non-electrolyte
  4. blood

Hint:

B

The sodium ion is at the highest concentration in:

  1. intracellular fluid
  2. extracellular fluid
  3. blood plasma
  4. none of the above

Hint:

B

Cells in a hypertonic solution tend to:

  1. shrink due to water loss
  2. swell due to water gain
  3. stay the same size due to water moving into and out of the cell at the same rate
  4. none of the above

Hint:

A