Phsiology Of Kidneys

Front 1

Which of these statements about the renal pyramids is false

a)They are located in teh medulla b)they contain glomeruli c)they contain collecting ducts d) they empty urine into calyces

Back 1

b) They contain glomeruli

Front 2

Matching:
Active transport of sodium;water follows passively

Back 2

proximal tubule

Front 3

Matching:
Active transport sodium;water impermeable

Back 3

ascending limb of loop

Front 4

Matching:
Passively permeable to water only

Back 4

decending limb of loop

Front 5

Matching:
Passively permeable to water and urea

Back 5

medullary collecting duct

Front 6

Antidiuretic hormone promotes the retention of water by stimulating the

a)active transport of water b)active transport of chloride c)active transport of sodium d)permeability of the collecting duct of water

Back 6

d) the permeability of the collecting duct to water

Front 7

Aldosterone stimulates sodium reabsorption and potassium secretion in the

a)proximal convoluted tubule b)descending limb of the loop c)ascending limb of the loop d)cortical collecting duct

Back 7

d)cortical collecting duct

Front 8

Substance X has a clearance greater than zero but less thatn that of insulin. What can you conclude about substance X

a)It's not filtered b)It's filtered but neither reabsorbed or secreted c)it's filtered and partially reabsorbed d)it's filter and secreted

Back 8

c)it's filtered and partially reabsorbed

Front 9

Substance Y has a clearance greater than insulin. what can you conclude of sub.Y

a)it's not filtered b)it's filtered but not reabsorbed or secreted c)it's filtered and partially reabsorbed d)it's filtered and secreted

Back 9

d)it's filtered and secreted

Front 10

About 65% of the glomerular ultrafiltrateis reabsorbed in the

a)proximal tubule b)distal tubule c)loop of Henle d)collecting duct

Back 10

a) the proximal duct

Front 11

Diuretic drugs that act in th eloop of Henle

a)inhibit active soduium transport b)cause an increased flow of filtrate to the distal convoluted tubule c)causes an increased secretion of potasium into the tubule d)promote the excretion of salt and water e)all

Back 11

e) all

Front 12

The appearence of glucose in the urine

a)occurs normally b)indicates the presence of kidney disease c)occurs only when the transport carriers for glucose become saturated d)is a result of hypoglycemia

Back 12

c)occurs only when the carriers for glucose become saturated

Front 13

Reabsoption of water thru the tubules occurs by

a)osmosis b)active transport c)facillitated diffusion d)all

Back 13

a)osmosis

Front 14

Which of the following factors oppose(s) filtration from the glomerulus

a)plasma onclotic pressure b)hydrostatic pressure in glomerular (Bowman's) capsule c)plasma hydrostatic pressure d)A&B e)B&C

Back 14

d)A&B

Front 15

The countercurrent exchange in the vasa recta

a)remove Na+from th eextracellular fluid b)maintains high concentrations of NaCl in the extracellular fluid c)raises the concentration of Na+ in the blood leaving the kidneys e)does all

Back 15

b)maintains high concentrations of NaCl in th eextracellular fluids

Front 16

The kidneys help to maintain acid-base balance by

a)the secretion of H+ in th edistal regions of the nephron b)th eaction of carbonic anhydrase w/in the apical cell membranes c)the action of carboni anhydrase w/in the cytoplasm of the tubule cells d)the buffering action of phosphates and ammonia in the urine e)all

Back 16

e) all