Osmolarity

Question 1

Osmolarity Equation

Answer 1

Sum of All Solutes/Volume of Water

Question 2

Equivalents Equation

Answer 2

Sum of all Charges/Volume of Water

Question 3

Serum Osmolality Equation

Answer 3

2*Na+BUN/2.8+glucose/18

Question 4

Effective Osmole

Answer 4

Solute that can exert osmotic pressure - doesn’t permeate and is excluded

Question 5

Major EC vs. IC Anions

Answer 5

Cl- and HCO3- vs. Proteins and Organic Phosphates

Question 6

Big Diff b/w Plasma and Interstitium

Answer 6

Plasma has more prots

Question 7

Gibbs-Donnan Forces

Answer 7

Act across membranes that are permeable to some ions but not others, shows IC osmolarity will exceed EC and thus cells will swell/burst if they don’t continually pump solutes out.