Renal Regulation of ECF Potassium Flashcards Preview

CVPR: Renal (Exam 4) > Renal Regulation of ECF Potassium > Flashcards

Flashcards in Renal Regulation of ECF Potassium Deck (11)
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1

High pH causes a shift of potassium ions into ____ from the ECF.

all cells

2

What cells synthesize aldosterone?

adrenal zona glomerulosa cells

2

______ increases potassium secretion, hence tends to produce hypokalemia.

Alkalosis

3

All of the filtered potassium is ______ reabsorbed, hence regulated potassium secretion in the fine tuning segments also determines potassium excretion and ECF potassium balance.

obligatorily

3

Alkalosis increases ______ secretion, hence tends to produce ______.

potassium; hypokalemia

5

What happens when the ECF concentration of K+ increases?

K+ is pumped into the cell AND the adrenal cortex cells are stimulated to release aldosterone

6

What do the principal cells do?

they move potassium from the serosa to lumen of the fine tuning segments

8

All of the filtered potassium is obligatorily reabsorbed, hence regulated potassium secretion in the fine tuning segments also determines potassium _____ and _____.

excretion; ECF potassium balance

9

How does aldosterone increase K secretion?

increases the number of Na/K/ATPase pumps on the basolateral surface and the # of apical K and Na channels

10

Alkalosis ______ potassium secretion, hence tends to produce ______.

increases; hypokalemia

11

____ causes a shift of potassium ions into all cells from the ECF.

High pH