Multiple choice

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

  1. SNS is activated releasing epinephrine and norepinephrine from adrenal medulla.

  2. Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse.

  3. Hypothalamus activates the parasympathetic division of brain.

  4. Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

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