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Renal and Urology > Physiology > Flashcards

Flashcards in Physiology Deck (16):
1

What is the rate of glomerular filtration

125ml/min
(180l/day)

2

What do the kidneys reabsorb

99 percent fluid
99 percent of salt
all glucose
all amino acids
half of urea
no creatinine

3

What is reabsorbed in the proximal tubule

sugars
amino acids
phosphate
sulphate
lactate

4

What is secreted in the proximal tubule

hydrogen
hippurates
neurotransmitters
bile
uric acid
drugs
toxins

5

What is primary active transport

energy is directly required to operate the carrier and move the substrate against its concentration gradient

6

what is secondary active transport

the carrier molecule is transported coupled to the concentration gradient of an ion

7

What is facililtate diffusion

passive carrier mediated transport of a substance down its concentration gradietn

8

What is needed to reabsorb sodium at the basolateral membrane of the tubular cell

Na+K-ATPase channcel

9

What is the renal threshold of plasma glucose befor it can no longer continue to reabsorb it and it will be excreted

10-12mmol/l

10

Where are all glucose and amino acids reabsorbed

the proximal tubule

11

what is the fluid leaving the proximal tubule like

iso osmotic

12

What is reabsorbed in the ascending limb

sodium and chlorine reabsorbed
(achieved by active transport in the thick AL and by passive transport in the thin AL

13

What are the features of the descending limb

does not reabsorb salt and is highly permeable to water

14

How is salt reabsorbe in the ascending limb

triple co transporter

15

What blocks the triple co transporter

loop diuretics

16

what is fluid leaving the distal tubule like

hypo osmotic