How is total body water portioned?

How is the OSP maintained? (4)

How do pressure differences change through a capillary?

What are the electrolyte compositions of these various fluids?

How is osmoregularity maintained in FW fish?

Aquaporins

Transcellular transport

Paracellular transport

What is the reaction for the catabolism of food stuffs?

What are the obligatory water losses associated with metabolism?