Renal Physl 15

Question 1

What is Hypokalemia?

Answer 1

The concentration of potassium inside the cell is higher than the concentration outside the cell

Question 2

What is Hyperkalemia?

Answer 2

When potassium levels increase in the extracellular fluid

Question 3

What are the symptoms of Hypokalemia?

Answer 3

• Muscle weakness

* Dysfunction of respiratory and cardiac muscle

Question 4

What are the symptoms of Hyperkalemia?

Answer 4

Initial increase in excitability followed by depression do to impaired repolarization

Question 5

What can cause dysfunction in potassium levels?

Answer 5

Renal or GI dysfunction

Question 6

What can cause excessive potassium loss in urine?

Answer 6

Diuretic drugs

Question 7

What hormone regulates potassium balance?

Answer 7

Aldosterone

Question 8

What does high potassium stimulate release of from the adrenal cortex?

Answer 8

Stimulates the release of aldosterone

Question 9

What part of the nephron does aldosterone work at?

Answer 9

The distal tubule

Question 10

How does aldosterone affect potassium concentration?

Answer 10

It acts at the distal tubule to stimulate the Na-K-ATPase which enhances potassium excretion