Question

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happens in his neurohormonal control system?

• A. Hypothalamus activates the parasympathetic division of brain
• B. Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex
• C. Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla
• D. Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse

Answer 1

The correct option is C Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla

In response to stress during emergency situations, the sympathetic nervous system activates the release of epinephrine and norepinephrine from the medulla of the adrenal gland. These are called as the emergency hormones or the hormones of fight or flight.