Autonomic Nervous System and Emotional Responses
Chapter 1

The chemical storm inside us

Chapter 2

The universal language of faces

Chapter 3

Cultural dialects of emotion

Chapter 4

The hidden layers of complex emotions

YOUR GOAL

Master of How our bodies speak the language of feelings

Ch 1 · The chemical storm inside us
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sable The autonomic nervous system automatically manages your body's stress and relaxation

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sable Brain Chemistry and Emotion

Dopamine sparks, serotonin glows, shaping our feelings.

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We cannot feel an emotion without our entire physical self participating.

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sable The physical chemistry behind broken heart syndrome

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The physical chemistry of a broken heart

sable Severe shock triggers a massive surge of adrenaline, causing Takotsubo cardiomyopathy, a temporary condition also known as broken

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How the autonomic nervous system runs the show

sable A 3D glass and chrome model showing labeled autonomic nervous pathways.

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My Fizzing Feelings
BETA

sable Match physical symptoms to emotions to learn how your body expresses different feelings.

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Fun Fact

Blushing blood flow: When you feel embarrassed, your stomach lining actually blushes red along with your cheeks due to rushed blood flow.

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Glossary
neurotransmitter (noun)
A chemical substance that transmits nerve impulses across a synapse to another cell. In 1921, Otto Loewi discovered these chemical messengers, which regulate human emotional states and physical stress responses.

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Gossip

Which physical symptom of nervousness do you find most annoying?

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Quiz

Which nerve serves as the primary superhighway connecting the brain directly to the digestive system?

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sable The amygdala serves as the brain's emotional alarm system.

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Quiz

In what year did Japanese medical researchers first describe Takotsubo cardiomyopathy, also known as broken heart syndrome?

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sable Stress causes physical reactions in the human stomach.

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Quiz

What physical change occurs to human airways when the sympathetic nervous system initiates a fight-or-flight response?

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Quiz

What chemical does the parasympathetic nervous system release to slow down your heart rate and calm your body?

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Quiz

Which hormone, released during stress, increases glucose in the bloodstream and alters immune system responses?

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Quiz

Which almond-shaped brain structure serves as the primary alarm system for emotional processing, especially fear?

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Quiz

How many neurons make up the enteric nervous system found in the human gut, often called the second brain?

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Quiz

How fast can the amygdala process a threat and trigger a fear response in milliseconds?

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