renal 2 Flashcards
tf filtration is an active process
F active
which of the following has a low reabsorption rate?
glucose
h20
Na
urea
urea
reabsorption changes in — with—
parrallel ; filtration
describe the process of urea reabs
h2o reabs
conc of urea inc in tubules
then moves down conc gradient to cap
H20 impremeable in
thick descending limb
prox tubule
ascending limb
ascending limb
which 2 structures are needed to absorb salt in prx tubule
microvilli and mitochondria
required to absorb Na in tubules
Na/ k atpase
thick descending limb
has lot of microvilli
dissolves salt
h20 imperm.
dissolves h20 but no NA
dissolves h20 but no NA
doesnt have much microvili or mit.
tf na/ k atpase are on the luminal side of tubes
F on basolat. membrane
tf Na exchange with H exists in the prox tubule (to get NA into the cell)
T
early prox tubule
NA contransport with solutes
Na contransport withK and Cl
has a Na channel to get Na into the tubule cell
NA contransport with solutes
contains cotransport of Na and Cl to get Na into tubules cell
Prox tubule
Distal tubule
TAL
Distal tubule
which part of the renal tubule reab 67% of NA
prox tubule
tf all glucose get reab at prox tubule
T
Glucose tranport
SGLT1/2 on basolat. membrane
Na glucose cotransport on lumenal membrane
Na Glucose exchanger on luminal membane
invole GLUT 1 and 2 to get glucose into cap side
more than 1
more than 1
invole GLUT 1 and 2 to get glucose into cap side
Na glucose cotransport on lumenal membrane
filtered glucose is a function of
plasma glucose*GFR
Tm limited
Na
Glucose
h20
glucos
transporter get saturated and cause excretion of Glucose because glucose cant get into cap (reabs)
2/3 get reabs in prox tubule
h20
na
glucoese
h2o and Na
h20 reabs is — in the prox tubule
isosmotic(follows salt)
high osmolarity in medulla causes H2O reabs in
descending limb
diabetes mellitus
nill reabs of glucose
no gradient for h2o
h20 in tube and get excreted
aqp1
exists in?
prox tubule and thick descending limb
(on luminal membrane and basolateral mem)
ADH triggers — from vesicles to fuse on luminal membrane
AQP1
AQP2
AQP3
AQP4
AQP2
