Exam 51: Osmotic Regulation and the Urinary System

Kidneys are thought to have evolved first among the ______________.

All of the following are mechanisms to cope with the problem of water balance except

The tendency of a solution to take up water by osmosis is called

Which of the following animals could drink seawater and not get dehydrated?

Select the incorrectly matched osmoregulatory organ and the organism that uses it.

In mammals,the degradation product of purine nucleotides is ____________.

Osmoreceptors in which one of the following organs respond to elevated blood osmolality?

The kidneys are important homeostatic organs,contributing to the stability of all of the following except

The reabsorption of glucose,amino acids,and many other molecules needed by the body is driven by _______________.

According to the figure,which letter corresponds to the area where water is absolutely not reabsorbed?

The ___________ fluid concentration is constant in most vertebrates.

ADH makes the collecting ducts _____________.

Nearly two-thirds of every vertebrate's body is composed of ___________.

Most vertebrates maintain homeostasis in regard to the total solute concentrations of their extracellular fluids and in regard to concentrations of specific inorganic ions.Which of the following ions should be excluded from consideration in the extracellular regulation of their concentration?