Question

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

Answer 1

Correct Answer - A
Epinephrine and nor-epinephrine are secreted by adrenal medulla (under the control of sympathetic nervous system) in respones to stress of any kind or during emergency situation. These are also called emergency hormones. Thus, they would be released when the person enter an empty room and suddenly find a snake