renal 5 Flashcards
tf most of k is in interceullular fluid
T
t/f 2/3 of fluid in body is ecf
f it is icf(28l to 14 l)
plasma k when lower than 3.5 meq/l
hypokalemia
normal plasma conc
3.5-5 meq/l
what is the effect on the right
low k outside
hyperpolarized and hard to get to threshold
symptoms of the curve on right
increased K on outside
very excitable
det resting potential
k out
after a meal plsma k increases stim k uptake thru
na/ k atpase
insuline and epeniephrine
inc k uptake by inc. na k atpase turnover rate
hyperkalemia
caused by insulin deficiency and beta antagonist
epinephrine bind to – to inc na/k atpase turnover rate and k is brought into the cell
beta receptor
treatment for hyperkalema
b agonist and insulin
2 factors inc na/k atpase pump
so that k can be absorbed in tissue cells
plasma k
insulin and epinephrine
tf after plasma K inc after a meal it immediately get translocated in a tissue cell and then immediately the plasma k level goes down to normal
F the plasma k level stays elvated to signal kidney to get rid of K by having more pumps activated
tf after k accumulates in tisses cells after intestinal absorption there is fast renal excretion
F
renal excretion is very slow (little by little goes ijnto urine)