Question

A person entering an empty room suddenly finds a snake in front. What happens to his neurohormonal control system?

• A. The sympathetic nervous system gets activated releasing epinephrine and norepinephrine from the adrenal medulla.
• B. Activation of the sympathetic nervous system releasing epinephrine and norepinephrine from the adrenal cortex.
• C. Neurotransmitters diffuse rapidly across synaptic cleft.
• D. Hypothalamus activates parasympathetic nervous system.

Answer 1

Answer: (A)

The sympathetic nervous system gets activated releasing epinephrine and norepinephrine from the adrenal medulla.

When a person entering an empty room suddenly finds a snake in front, epinephrine and norepinephrine will be secreted from adrenal medulla. They act as neurotransmitters and activate sympathetic nervous system which will induce fight or flight responses in the body. This will lead to increase in alertness, heartbeat and strength of heart contraction.

So, the correct answer is 'The sympathetic nervous system gets activated releasing epinephrine and norepinephrine from the adrenal medulla'.