BT_PO 1.63 Describe glomerular filtration and tubular function

Daily glomerular filtration of potassium is approximately 800 mmol/day. TRUE / FALSE

Reabsorption of potassium in the proximal tubule is fixed at 65% of the amount filtered. TRUE / FALSE

Aldosterone controls potassium excretion by altering the amount reabsorbed in the distal tubule. TRUE / FALSE

An increase in plasma potassium concentration directly stimulates the Na-K pumps in the distal tubule, to increase potassium secretion. TRUE / FALSE

During hypokalaemia, the kidneys can achieve zero potassium excretion in the urine. TRUE / FALSE

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