Most vertebrates maintain homeostasis in regard to the total solute concentrations of their extracellular fluids and the concentrations of specific inorganic ions.The kidneys participate in regulating the extracellular fluid concentration of all ions below EXCEPT A)Fe²⁺ ions. B)Ca²⁺ ions. C)K⁺ ions. D)Na⁺ ions. E)Cl^- ions.

Question

Quizplus · Accepted Answer

Fe²⁺ ions are not commonly found in extracellular fluids and are not regulated by the kidneys. The other ions listed are all commonly found in extracellular fluids and are regulated by the kidneys as part of maintaining homeostasis.

Most Vertebrates Maintain Homeostasis in Regard to the Total Solute