Which neurotransmitter is activated when a person faces the threat of a physical attack?Multiple Choiceacetylcholineparasympatheticnorepinephrineserotonin

Break Down the Problem

1. Identify the context: The question is about neurotransmitters involved in the body's response to threats.
2. Review the options: acetylcholine, parasympathetic, norepinephrine, serotonin.

Relevant Concepts

1. Neurotransmitter Roles:
   • Acetylcholine: Primarily involved in muscle activation and autonomic functions.
   • Parasympathetic: Refers to a branch of the autonomic nervous system, not a neurotransmitter.
   • Norepinephrine: Plays a crucial role in the body's 'fight or flight' response.
   • Serotonin: Primarily regulates mood and emotion, not directly tied to immediate physical threat response.

Analysis and Detail

• The "fight or flight" response is initiated by the sympathetic nervous system, where norepinephrine (also known as noradrenaline) is released to prepare the body to confront or flee from danger. This involves increased heart rate, blood flow to muscles, and other physiological changes essential for immediate physical activity.

Verify and Summarize

• Among the given options, norepinephrine is specifically associated with triggering the body's acute stress response when confronted with a threat.

Final Answer

Norepinephrine is activated when a person faces the threat of a physical attack.