When blood pressure increases, a number of events occur that return blood pressure to normal. Which of the following is one of the events that occurs after an increase in blood pressure?
A) Baroreceptors are stimulated.
B) Action potential frequency to the cardioregulatory center of brain decreases.
C) Sympathetic stimulation of the heart increases.
D) Heart rate increases.
E) An increase in number of action potentials in the cardiac nerve

Question

Quizplus · Accepted Answer

Baroreceptors, located in the walls of blood vessels, are sensitive to changes in blood pressure. When blood pressure increases, baroreceptors are stimulated and send signals to the brain to initiate responses that lower blood pressure, such as reducing heart rate and dilating blood vessels.

When Blood Pressure Increases, a Number of Events Occur That