21. What is tubular secretion?
What are some examples of
substances secreted through
the renal tubules?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Tubular secretion is passage of
substances the blood capillaries
surround the nephron to
the tubular for these substances
be excreted with . Ammonia,
uric acid, , bicarbonate and
hydrogen , metabolic acids and
, various ingested drugs
() and other substances
secreted by the tubules.