COMBINED PSW I and 2

Question 0

Px

Answer 0

concentration of x in the plasma

Question 1

RPF

Answer 1

renal plasma flow

Question 2

V

Answer 2

urine flow rate

Question 3

Ux

Answer 3

concentration of substance x in the urine

Question 4

using the Fick principle: RPF=

Answer 4

UxV/ (Pxa-Pxv)

Question 5

Rate of Filtration (Fx)=

Answer 5

Plasma concentration (Px) x GFR

Question 6

Rate of excretion (E)=

Answer 6

UxV

Question 7

Rate of reabsorption (R)=

Answer 7

F-E

Question 8

Rate of secretion (S)=

Answer 8

E-F

Question 9

Fraction excretion (FE)=

Answer 9

E/F

Question 10

Fraction reabsorption (FR)=

Answer 10

1-E/F

Question 11

Clearance (C)=

Answer 11

UV/P

Question 12

Clearance definition

Answer 12

the volume of plasma cleared of a substance per unit of time

Question 13

what substance is completely excreted? What can we say about it?

Answer 13

Inulin, F=E

Question 14

what do we use in the clinic to measure GFR?

Answer 14

creatinine

Question 15

the normal level of creatinine in the blood is:

Answer 15

1 mg/dl

Question 16

what is a substance that is completely secreted and not reabsorbed? What can it measure?

Answer 16

PAH, blood flow to the kidneys

Question 17

Clearance of Creatinine (Ccr) can be used to estimate

Answer 17

GFR

Question 18

Estimate of eRPF

Answer 18

Clearance of PAH

Question 19

normal Tm for glucose

Answer 19

375 mg/min

Question 20

normal renal threshold for glucose

Answer 20

180-200 mg/dL

Question 21

Filtered load

Answer 21

= Plasma concentration x GFR