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

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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-harmonal control system?

Options

(a) Sympathetic nervous systemis activated releasing epinephrin and norepinephrin 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 epinephrin and norepinephrin from adrenal cortex.

Correct Answer:

Sympathetic nervous systemis activated releasing epinephrin and norepinephrin from adrenal medulla.

Explanation:

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.

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Topics: Locomotion and Neural Control (33)
Subject: Biology (4253)

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