Identify the effectors in this homeostatic reflex: Eating a salt-rich meal increases blood volume and pressure, stretching blood vessel walls. Nerve signals sent to the brainstem stimulate changes in hormonal and neural signaling. The heart rate is slowed, blood vessel walls are relaxed, and the kidneys increase urinary salt. The blood pressure returns toward normal.
A) brainstem and blood vessels
B) blood vessels, hormones, and nerves
C) heart, kidneys, and blood vessels
D) brainstem, blood vessels, and kidneys
E) hormones and nerves

Question

Quizplus · Accepted Answer

The effectors in this homeostatic reflex are the heart, kidneys, and blood vessels. These organs respond to the nerve signals sent to the brainstem by slowing down the heart rate, relaxing blood vessel walls, and increasing urinary salt excretion by the kidneys. These changes all work together to bring the blood pressure back to normal. Hormonal and neural signaling are not effectors themselves but rather signals that stimulate the effectors. Therefore, choices A, B, D, and E are not correct.

Identify the Effectors in This Homeostatic Reflex: Eating a Salt-Rich