A decrease in mean arterial pressure is detected by
A)an effector.
B)an integrating center.
C)a sensor.
D)a chemical messenger.

Question

Quizplus · Accepted Answer

A decrease in mean arterial pressure would be detected by a sensor, such as baroreceptors located in the walls of arteries, which are sensitive to changes in pressure. They transmit this information to an integrating center, such as the cardiovascular control center in the medulla oblongata of the brain, which processes the information and sends out appropriate signals to effectors (such as the heart, blood vessels, and kidneys) to restore the blood pressure to normal levels. Chemical messengers (such as hormones) may also play a role in this process, but they are not the initial detectors of the change in mean arterial pressure.

A Decrease in Mean Arterial Pressure Is Detected by