Flashcards in ch.27 Deck (22):
The term for various areas in the body with different fluid composition
Two sources of body water
preformed (ingested) and metabolic
Part of the brain where the thirst center is located
Percent of total body water that is intracellular fluid
The term for tissue (interstitial) fluid, plus plasma & lymph, plus transcellular fluids
Stimulating this is the only way to actually increase body water; all other regulatory mechanism can at best only reduce the loss of water
thirst center (and drinking)
Loss of water and salts, proportionately (such as with hemorrhage).
Loss of water but not salts; body fluids become more concentrated
excess water intake, dilutes body fluids resulting in hyponatremia
hypotonic hydration (water intoxication)
A problem in which total body fluid might be normal, but blood volume is too low - from edema commonly, as in anaphylactic shock
This is the most abundant cation in the ICF
This is the most abundant cation in the ECF.
Excess sodium in blood
Although low in both ECF and ICF, calcium is higher in the ...
Phosphate is higher in (ICF or ECF)
High blood potassium level, can alter cell polarity and excitability - even stop the heart.
This ion, whether in excess or deficiency, can be associated with making nerve and muscle cells less excitable.
Deficiency of calcium, can cause tetany
In an ionic molecule, if the cation is hydrogen, the molecule is a(n) _____.
In an ionic molecule, if the cation is anything but hydrogen, the molecule is a(n) _____.
This ICF cation can be shifted with pH imbalances; acidosis shifts it out of cells, and alkalosis shifts it into cells.