fight-or-flight response

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Diagram of the autonomic nervous system showing the sympathetic and parasympathetic divisions. The left side illustrates sympathetic nerves branching from the spinal cord to organs and glands, while the right side shows parasympathetic nerves connecting to organs such as the eye, heart, lungs, liver, stomach, intestines, and bladder. Color-coded pathways and labeled ganglia highlight the different nerve routes and target organs in human anatomy.

A close-up black-and-white image of an actress with wide, frightened eyes.

fight-or-flight response: Media

physiology

Videos

A close-up black-and-white image of an actress with wide, frightened eyes.

Why Do Some People Love Feeling Fear?

Haunted houses. Horror films. Hayrides. What attracts us to fear?

Video: © American Chemical Society (A Britannica Publishing Partner)

Images

Diagram of the autonomic nervous system showing the sympathetic and parasympathetic divisions. The left side illustrates sympathetic nerves branching from the spinal cord to organs and glands, while the right side shows parasympathetic nerves connecting to organs such as the eye, heart, lungs, liver, stomach, intestines, and bladder. Color-coded pathways and labeled ganglia highlight the different nerve routes and target organs in human anatomy.

autonomic nervous system

Schematic representation of the autonomic nervous system, showing distribution of...

Encyclopædia Britannica, Inc.

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