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 happen in his neuro-hormonal control system?

• A. Sympathetic nervous system is activated releasing epinephrine and nor-epinephrine from adrenal medulla.
• B. Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse.
• C. Hypothalamus activates the parasympathetic division of the brain.
• D. Sympathetic nervous system is activated releasing epinephrine and nor-epinephrine from the adrenal cortex.

Answer 1

The correct option is A Sympathetic nervous system is activated releasing epinephrine and nor-epinephrine from adrenal medulla.

Epinephrine and norepinephrine are secreted by adrenal medulla in response to stress of any kind and during emergency situations and are called emergency hormones or hormones of flight of flight.