Control of plasma osmolality

Question 1

How can you balance water?

Answer 1

either

1) remove water from the urine without the solute and add water to the ECF is plasma osmolality has increase
2) leave excess water in the urine if plasma osmolality is low and excrete it

Question 2

What are the 2 classes of nephrons and what do each of them do?

Answer 2

• juxtamedullary - responsible for making concentrated urine (have the vasa recta) - long loop of henle
• cortical - (majority about 85-90%) and are responsible for most the regulatory activity of water