Baroreceptors in the aorta and carotid arteries A) detect atherosclerosis. B) are activated when blood pressure rises. C) constrict arteries when available O₂ is low. D) detect when a flexor muscle is stretched too far and then pump more blood to the muscle. E) are sensitive to CO₂ levels in the blood.

Question

Quizplus · Accepted Answer

Baroreceptors in the aorta and carotid arteries are activated when blood pressure rises. They are part of the body's natural blood pressure regulation system, and when they detect a rise in blood pressure, they send signals to the brain to decrease the heart rate and dilate blood vessels. This helps to bring blood pressure back down to a normal level.

Baroreceptors in the Aorta and Carotid Arteries