Which of the following is a trigger for the other actions described?
◦ Extracellular fluid volume is reduced.
◦ Solute concentration in the extracellular fluid rises above a set point.
◦ Posterior pituitary secretes ADH.
◦ Distal tubules of the nephrons and the collecting ducts become more permeable to water.
◦ A small amount of concentrated urine is excreted.