12.2

Question 1

Interstitial fluid

Answer 1

The fluid that bathes
the cells, filling the space between the
cells of the body (the “interstices”)

Question 2

Hypovolemia

Answer 2

Reduction in the volume of the intravascular fluid

Question 3

Osmometric thirst

Answer 3

Thirst produced
by an increase in the osmotic pressure
of the interstitial fluid relative to the
intracellular fluid, thus producing cellular
dehydration

Question 4

Osmoreceptor

Answer 4

A neuron that detects
changes in the solute concentration of the
interstitial fluid that surrounds it

Question 5

Volumetric thirst

Answer 5

Thirst produced by hypovolemia

Question 6

Angiotensin

Answer 6

A peptide hormone that constricts blood
vessels, causes the retention of sodium
and water, and produces thirst and a salt
appetite.