Final answer:
When blood pressure falls, the rate of baroreceptor firing decreases in the negative feedback-regulated homeostatic control of blood pressure.
Step-by-step explanation:
When blood pressure falls, the rate of baroreceptor firing decreases in the negative feedback-regulated homeostatic control of blood pressure. Baroreceptors are specialized sensory receptors that detect changes in blood pressure.
When blood pressure decreases, the baroreceptors fire action potentials at a slower rate. This decrease in firing rate triggers a series of responses to restore blood pressure to normal levels.