It Is Late at Night and You Are Walking Along

question 121

Multiple Choice

It is late at night and you are walking along a dark sidewalk.In the bushes next to the sidewalk you hear something moving.Your heart starts beating fast,your pupils dilate,and you become very anxious.The neurotransmitter creating this effect is

• A) acetylcholine.
• B) norepinephrine.
• C) dopamine.
• D) serotonin.
• E) an endorphin.