Which organs, located on top of the kidneys, produce the stress
Chapter 1

The chemistry of panic

Chapter 2

The pre-exam brain freeze

Chapter 3

Why did you just yawn

Chapter 4

The literal brain freeze

Ch 1 · The chemistry of panic
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mankai Evolution shaped the biology of human stress.

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mankai The Toll of Chronic Pressure

When cortisol won't fade, the mind begins to shrink, It dims the way we remember and the way we think.

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Our bodies treat modern worries as life-or-death threats.

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mankai The physical process behind a sudden adrenaline rush

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Meet cortisol, the alarm system

mankai Discovered by Edward Kendall in the 1930s, this alarm hormone floods your bloodstream with glucose to survive perceived danger.

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The high-speed adrenaline rush

mankai This rapid chemical surge dilates your airways to prepare you for sudden danger.

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Silly Synapses
BETA

mankai Sort the scrambled synapses to discover how your brain reacts under pressure.

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Fun Fact

Cortisol cycles: Your cortisol levels naturally peak around 8:00 AM to help you wake up and drop to their lowest point around midnight.

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Glossary
adrenaline (noun)
A hormone secreted by the adrenal glands that increases rates of blood circulation and breathing to prepare muscles for exertion. During sudden fear, the adrenal glands release this hormone, triggering a rapid increase in heart rate.

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Gossip

How do you usually handle sudden stress?

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Quiz

In which decade did biochemist Edward Kendall first isolate cortisol, later earning him a Nobel Prize in 1950?

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mankai Chronic stress causes severe damage to the human body

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Quiz

Which organs, located on top of the kidneys, produce the stress hormone cortisol?

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Quiz

What physical change occurs when adrenaline interacts with the smooth muscles of the human respiratory system?

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Quiz

Which hormone acts as the body's immediate, split-second first responder to stress before cortisol takes over?

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Quiz

For what primary evolutionary purpose did the human fight-or-flight response originally develop?

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Quiz

Why do modern everyday worries like school exams trigger the exact same biological stress response as ancient physical threats?

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Quiz

How does long-term elevated cortisol affect the human immune system's ability to fight off common illnesses?

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Quiz

What brain structure, crucial for learning and memory, can physically shrink due to prolonged exposure to high cortisol levels?

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