Which of the following is NOT a tissue of the body normally involved in regulating the volume of body fluids?
A. Osmoreceptor.
B. Baroreceptors.
C. Reticular activating system.
D. Vasomotor center of the brain.
The reticular activating system is involved in the control of sleep, wakefulness, attentiveness, and behavior, but does not actively participate in regulating the volume of body fluids.