A person entering an empty room suddenly finds a snake right

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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?

1. Sympathetic nervous system is activated releasing epinephrin and norepinephrin 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 epinephrin and norepinephrin from adrenal cortex.

Correct Option: A

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