Tubular transport - acid/base 1

When ECF concentrations of bicarbonate are within normal ranges, approximately ____ of filtered bicarbonate will be excreted.

0%

Omnivores secrete _________ urine.

Acidic

Ammonium is produced in the _______________.

Proximal tubule

Reabsorption of hydrogen ions in the thick ascending limb of the loop of Henle relies on ___________ transport.

Hydrogen ions are not reabsorbed in this segment

Carnivores secrete _____________ urine.

Acidic

Reabsorption of bicarbonate in the tick ascending limb of the loop of Henle relies on ____________ transport.

Active

The hydration of carbon dioxide forms ____________.

H2CO3

____________ cells reabsorb hydrogen ions.

Beta intercalated

Reabsorption of bicarbonate in the collecting duct relies on __________ transport.

Active

NH3 = __________

NH4+ = ___________

Ammonia

Ammonium

_____________ cells reabsorb bicarbonate.

Alpha intercalated

Herbivores secrete _________ urine.

Alkaline

___________ is ____________-charged

Ammonium, positively

Carbonic anhydrase accelerates the conversion of carbon dioxide into _____________.

H2CO3

When ECF concentrations of bicarbonate are within normal ranges, approximately ____ of filtered bicarbonate will be reabsorbed by the proximal tubule.

80%

Carbonic acid dissociates into ___________.

H+ and HCO3-

Aquaporin-1 allows for the transport of water and ___________ across apical and basolateral membranes.

Carbon dioxide

When ECF concentrations of bicarbonate are within normal ranges, approximately ____ of filtered bicarbonate will be reabsorbed

100%

Ammonium is secreted into the tubular fluid in the __________________.

Collecting duct and proximal tubule

Bicarbonate __________ bind to proteins; therefore, __________ of the bicarbonate in the plasma can be filtered through the glomerulus.

Does not; all

Ammonium can be transported across apical and basolateral membranes of epithelial cells lining the tubule by taking the place of ___________ ions.

Hydrogen

Ammonium is reabsorbed from the tubular fluid in the __________________.

Thick ascending limb of the loop of Henle

Reabsorption of hydrogen ions in the collecting duct relies on ___________ transport.

Active

Reabsorption of hydrogen ions in the proximal tubule relies on ______________ transport.

Hydrogen ions are not reabsorbed in this segment

Ammonium can be transported across apical and basolateral membranes of epithelial cells lining the tubule by taking the place of _________ ions.

Potassium

__________ cells secrete bicarbonate.

Beta intrercalated

Carbonic anhydrase accelerates the conversion of carbonic acid into _________

H2O and CO2

Reabsorption of bicarbonate in the proximal tubule relies on _________ transport.

Active

_____________ cells secrete hydrogen ions.

Alpha intercalated