Urine Formation Flashcards
oliguria
abnormaly low output
between 100ml to 400ml a day
active transport
movement of molecules across cell membrain
lower concentration to a region of higher concentration
passive transport
movement of molecular substance across cell membrains
no need for energy input
dose not require input of cellular energy
nitrogen waste products
are poorly reabsorbed if at all
3 nitrogen waist products
urea
uric acid
creatinine
urea
formed by liver
end product of protein breakdown
amino acids used to produce energy
uric acid
realesed when nuclic acids are metabolized
creatinine
associated with creatine metabolism in muscle tissue
glomerular filtration is
a non selective, passive process in which fluid passes from blood into the glomerular capsule, part of the renal tubule
what is the fluid called once in capsule
filtrate
flitrate is
blood plasma without blood proteins
anuria is
not enough urine production ( less than 100ml day)
tubular reabsorbtion begins?
as soon as filtrate enters the proximal convoluterd tubule
tubule cells are called — and they?
transporters
take up needed substances from filtrate and pass them out
most absorption occurs in the
proximal convoluted tubles