(Solved) Urine and glomerular filtrate

jock52

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12 years ago

Assuming NORMAL conditions, note whether each of the following substances would be in (A)greater concentration in the urine than in the glomerular filtrate, (B) in lesser concentration in the urine than in the glomerular filtrate, or (C) absent in both urine and glomerular filtrate. Choose the correct letter from the right column.

Water
Urea
Uric acid
Pus (white blood cells)
Glucose
Albumin
Creatinine
Hydrogen ions
Red blood cells
Amino acids

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seedatadam

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12 years ago

Urea: A
Uric Acid: A
Creatinine: A
Water: B
Glucose: B
Amino Acis: B
Albumin: C
RBC: C
WBC: C
H+ ions: no idea...
Hope this helps... Slight Smile

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jock52 Author

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Posts: 111

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12 years ago

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how_mendel

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12 years ago

https://biology-forums.com/index.php/topic,10134.new.html#new

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Biology!

gnud

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12 years ago

The kidney can correct any imbalances by:

Removing excess acid (hydrogen ion) or bases (bicarbonate) in the urine and
Restoring the bicarbonate concentration in the blood to normal

The kidney cells produce a constant amount of hydrogen ion and bicarbonate because of their own cellular metabolism (production of carbon dioxide). Through a carbonic anhydrase reaction similar to the red blood cells, hydrogen ions get produced and secreted into the lumen of the nephron. Also, bicarbonate ions get produced and secreted into the blood. In the lumen of the nephron, filtered bicarbonate combines with secreted hydrogen ions to form carbon dioxide and water (carbonic anhydrase is also present on the luminal surface of the kidney cells). Whether the kidney removes hydrogen ions or bicarbonate ions in the urine depends upon the amount of bicarbonate filtered in the glomerulus from the blood relative to the amount of hydrogen ions secreted by the kidney cells. If the amount of filtered bicarbonate is greater than the amount of secreted hydrogen ions, then bicarbonate will be lost in the urine. Likewise, If the amount of secreted hydrogen ion is greater than the amount of filtered bicarbonate, then hydrogen ions will be lost in the urine (i.e. acidic urine).

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jock52 Author

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12 years ago

Quote from: howard (12 years ago)

https://biology-forums.com/index.php/topic,10134.new.html#new

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No because it says nothing about hydrogen ions Slight Smile

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jock52 Author

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12 years ago

Quote from: gnud (12 years ago)

The kidney can correct any imbalances by:

Removing excess acid (hydrogen ion) or bases (bicarbonate) in the urine and
Restoring the bicarbonate concentration in the blood to normal

So would it be fair to say that hydrogen ions would present in neither the urine or filtrate?

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duddy

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Staff Member

12 years ago

This image should be enough to answer your question. Yes, urine will contain hydrogen ions.

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