The Total Body solute

Problem 2.Part 2 (14pt) Now add the reserved urea solute to the Total Body solute. If there are$$250\mathrm{mOsmol}$$urea/l in 2 liters how many total mOsmoles of urea should be added to the solute block of the Total Body column?

506 mbsmbl Next recalculate the final osmolarity of the total body column. Carry that concentration across to the ECF and ICF compartments.

Note that Urea will distribute itself throughout the body until its (the urea) concentration everywhere is equal, but it will not cause any water shift between ECF and ICF. So will the ECF and ICF volumes change from those calculated in Part 1 of Problem 2?

Finally calculate the final solute mOsmoles (total of$$\mathrm{NaCl}$$and Urea) in the solute blocks of ECF and ICF using$$S=V\ast$$Answer the following questions from the values in this final table: a. What happened to the body osmolarity after adding the solution?

b. This result means that the added solution was – osmotic to the body’s starting osmolarity. c. What happened to the ICF volume? d. This means that the added solution was -tonic to the cells.