After blood loss, will sympathetic tone or parasympathetic tone increase or decrease?
A) Sympathetic tone increases to help restore blood pressure. Parasympathetic tone decreases for the same reason.
B) Parasympathetic tone increases to conserve energy. Sympathetic tone decreases to promote relaxation.
C) Both sympathetic and parasympathetic tones decrease to conserve energy.
D) Both sympathetic and parasympathetic tones increase to enhance tissue perfusion.