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Flashcards in more practice questions Deck (34):
1

the renal excretion rate for a solute is best described by what

filtration-reabsorption + secretion

2

what hormone is produced in response to renin release by the kidneys

angiotensin 2

3

which would increase both GFR and RBF

dilation of afferent arterioles

4

what can the kidney produce from alanine, glycerol and lactate

glucose

5

what hormone produced by the kidneys stimulates uptake of Ca from the intestines

1,25- (OH)2-cholecalciferol

6

normal plasma osmolarity of the ECF would be equal to what

300 mOsm/L

7

reabsorption by the kidney averages what quantity of tubular fluid/day

178.5 L/day

8

the average urine production in a day is equal to what

1.5 L/day

9

what effect does the efferent arterioles have on the glomerular capillary filtration pressure

keeps it constant along its length

10

in the kidney, where does all the filtration take place

glomerular capillaries

11

what nephrons are capable of concentrating the urine

juxtamedullary

12

urea transporters in the inner medullary collecting ducts are stimulated by what

ADH

13

what causes relaxation of the detrusor muscle and contraction of the internal sphincters, allowing the bladder to fill

stimulation of SNS

14

on average, what percent of body weight is due to extracellular fluid

20%

15

which contributes most to plasma osmolarity

plasma Na

16

if you experience a high water intake, what kind of fluid shift would you expect

shift from ECF to ICF, decrease in osmolarity

17

which marker is best suited to measure plasma volume using indicator dilution

radioactive albumen

18

what would cause a hyposmotic volume contraction associated with and increase in water loss>NaCl loss resulting in a decrease in ECF volume, increase in osmolarity, resulting in a shift in volume from ICF to ECF? There is no change in hematocrit

dehydration (sweating)

19

what substance would have the highest clearance

para aminohippuric acid

20

what best describes renal handling of albumen in the blood

not filtered and not secreted

21

what is the physiologic significance of substance x with a clearance ratio >1

substance x is both filtered and secreted

22

what is the physiologic significance of substance x with a clearance ratio >1

substance x is both filtered and secreted

23

why is the most important function of the kidney the reabsorption of Na

Na reabsorption drives virtually all other solute reabsorption

24

the majority of solute is reabsorbed in what portion of the nephron

proximal tubule

25

what is the Tm for filtered glucose reached

plasma concentration of glucose first exceeds 350 mg/dL

26

in the kidney, what is a physiologic function of urea

helps create osmotic gradient important in concentrating urin

27

what is located on the luminal (apical) side of the tubular cell in the TAL that reabsorbs about 25% of the filtered Na

Na/K Cl transporter

28

how does the TAL dilute the tubular fluid

by reabsorbing solute and impermeable to water

29

what tubular cell in the late distal tubule is responsible for K reabsorption

a-intercalated cell

30

what effect does a deficiency of insulin have on blood K concentration

hyperkalemia

31

what effect does ADH have on the collecting duct

increased permeability to water

32

a patient who is excessively vomiting is likely to develop what condition

metabolic alkalosis

33

to compensate of metabolic alkalosis, what is an appropriate compensatory response

decreased ventilation

34

what is an example of a fixed acid produced by breakdown of phospholipids

sulfuric acid