A person entering an empty room suddenly finds a snake right in front on opening the door. Which...

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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?
(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 nerveimpulse.
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