Renal Regulation of Urea,Phosphate, Calcium and Magnessium

Question 1

ADH increases permeability of these via facilitated diffusion transporter for urea (UT1)

Answer 1

Inner Medullary Collecting Ducts

Question 2

Solute that increases maximum urine osmolality

Answer 2

Urea

Question 3

Calcium - 2.4 mEq/L

Answer 3

Hypercalcemia – can cause ARRHYTHMIAS

Hypocalcemia – can cause TETANY

Question 4

This occurs only in the PCT and nowhere else

Answer 4

Phosphate reabsorption

Question 5

Serve as urinary buffer for H+

Answer 5

Unreabsorbed PO4