Chapter 11: Part 2 Drinking Flashcards
how many main fluid compartments does the body contain?
four compartments
how much of the body water is in the intracellular fluid?
two-thirds of the body’s water
what is intracellular fluid?
the fluid portion of the cytoplasm of cells
what is the rest of the body fluid?
extracellular fluid
what is extracellular fluid?
fluid outside of cells
what are two types of fluids found in extracellular fluid?
intravascular fluid and interstitial fluid
what is intravascular fluid?
blood plasma
what is interstitial fluid?
fluid between our cells
what two body fluid compartments should be kept within precise limits?
intracellular and intravascular
what is isotonic?
The characteristic of a solution that contains enough solute that it will draw water out of a cell placed in it, through the process of osmosis.
what is hypotonic?
The characteristic of a solution that contains so little solute that a cell placed in it will absorb water, through the process of osmosis.
what controls the intracellular fluid?
concentration of solutes in the interstitial fluid
what does the loss of water cause? what about the gain of water?
deprives ability to perform chemical reactions; cause their membranes to rupture…. that’s why interstitial fluid must be closely regulated
why must the blood plasma be closely regulated?
hypovolemia will occur
what is hypovolemia?
blood volume falls too low which causes heart to not be able to pump the blood effectively… if not restored, heart failure will result. Reduction in the volume of the intravascular fluid.
The two important characteristics of the body fluids—the solute concentration of the intracellular fluid and the volume of the blood—are monitored by?
two sets of receptors, need both to work
what receptors do they need?
one measuring blood volume and another for measuring cell volume
