A patient is being treated for dehydration and asks the nurse how the body maintains proper fluid composition and volume. The nurse correctly includes which regulatory mechanisms? (Select all that apply.)
A) Concentration of urine
B) Increased production of erythropoietin
C) Secretion of electrolytes
D) Dilution of urine
E) Increased blood pressure
A, C, D
Feedback:
The kidneys regulate the composition of body fluids by balancing the levels of the key electrolytes, secreting or absorbing these electrolytes to maintain the desired levels. Body fluid volume is controlled by diluting or concentrating urine. Erythropoietin helps to increase red blood cell production, which helps increase oxygen to the organs. Increased blood pressure does not change the volume or composition of body fluids.
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