Which of the following is an example of endocrine regulation via a negative feedback mechanism?
A) As blood glucose levels fall, glucagon is secreted and stimulates the liver to convert glycogen to glucose.
B) A stress response stimulates the sympathetic nervous system to release epinephrine into the bloodstream.
C) When circulating volume is decreased, the pituitary gland secretes antidiuretic hormone into the bloodstream.
D) The neural regulating mechanism decreases its signals to the adrenal medulla, decreasing epinephrine release.
Answer: D) The neural regulating mechanism decreases its signals to the adrenal medulla, decreasing epinephrine release.
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