Question

question 47
1 pts

what is the key neurotransmitter in flight, fight, or freeze stress response and affects arousal, attention, and mood?

• endorphins
• glutamate
• serotonin
• norepinephrine

Explanation:

🆕 New Concept Discovered: Neurotransmitter Functions
Chemical messengers regulating body and brain states.

Step 1: Analyze the question requirements

The question asks for a key neurotransmitter involved in:

• The "flight, fight, or freeze" stress response.
• Regulating arousal, attention, and mood.

Step 2: Evaluate the options

• Endorphins: Primarily involved in pain relief, pleasure, and the "runner's high."
• Glutamate: The primary excitatory neurotransmitter in the central nervous system, crucial for learning and memory.
• Serotonin: Primarily regulates mood, sleep, appetite, and digestion.
• Norepinephrine: Released during times of stress to trigger the sympathetic nervous system's "fight-or-flight" response. It directly increases heart rate, releases glucose, and increases blood flow to muscles while enhancing focus, arousal, and attention in the brain.

Step 3: Identify the correct match

Norepinephrine (also known as noradrenaline) is the primary neurotransmitter responsible for mobilizing the brain and body for action during acute stress, directly matching all criteria in the prompt.

Answer:

Norepinephrine