Titratable acid excretion — Flashcards

Flashcard 1: In the lumen of late distal tubule and collecting duct, secreted H+ combines with the HPO4- to form H2PO4, which is a _____ acid

Answer: titratable

Flashcard 2: In the lumen of the collecting duct, NH3 and H+ form NH4+, which is trapped in the tubular fluid and excreted ("_____"))

Answer: diffusion trapping

Flashcard 3: H+ is secreted by _____ on the luminal membrane of the -intercalated cells of the collecting duct

Answer: H+-ATPase

Flashcard 4: For each H+ excreted as titratable acid, one new _____ is synthesized and reabsorbed

Answer: HCO3-

Flashcard 5: Acid-base disturbances may affect serum K+ levels via altering activity and directionality of the _____ exchanger

Answer: H+-K+

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Flashcard 6: In _____ cells (in plasma), CO2 is combined with H2O via the enzyme carbonic anhydrase, forming H2CO3

Answer: red blood

Extra:   https://onlinemeded.org?ref=anki 

Flashcard 7: What acid-base disturbance is associated with hypokalemia? _____

Answer: Alkalosis

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Flashcard 8: The delta cells of the islets of Langerhans compose 10% of the islet and secrete _____

Answer: somatostatin

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Flashcard 9: The osmotic diuresis in diabetic ketoacidosis may lead to fatal arrhythmias by causing _____ depletion

Answer: total body K+

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Flashcard 10: What are the effects of vomiting, diarrhea or hyperventilation on serum potassium levels? _____

Answer: Decreased (hypokalemia)

Extra:  * reduced acid levels (alkalosis) -> intracellular potassium shift -> lower serum potassium Watch Potassium Disorders [https://dashboard.sketchy.com/study/medical/courses/medical-pathophysiology/units/medical-pathophysiology-renal/videos/medical-pathophysiology-renal-volume-electrolyte-and-acidbase-disorders-potassium-disorders?utm_source=anki&utm_medium=partnership&utm_campaign=february_update&utm_content=medical] https://onlinemeded.org/spa/renal?ref=anki