Fight-or-flight reactions cause activation of

Options

A. The adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
B. The pancreas leading to a reduction in the blood sugar levels
C. The parathyroid glands, leading to increased metabolic rate
D. The kidney, leading to suppression of reninangiotensinaldosterone pathway

Answer

A

Explanation

In stressful situations and during exercise, impulse from the hypothalamus stimulate sympathetic preganglionic nervous which in turn stimulate the chromaffin cells to secrete epinephrine and norepinephrine. Because of the role of these hormones in flight or fight response this gland is also known as gland of emergency.