Your eyes are constantly producing tears, but not all of them serve the same purpose.
In short: Alex Gendler explains the biological mechanisms behind human crying. By following the daily cycle of an eye, this lesson distinguishes between the three primary types of tears and why our bodies produce them in different situations.
Human eyes produce three distinct categories of tears: basal, reflex, and emotional. Basal tears are produced constantly to keep the eye lubricated and protected. Reflex tears are triggered by external irritants, such as the chemicals released when chopping onions, to flush out the eye.
Emotional tears occur in response to internal states rather than physical irritation. While the exact function of these tears remains a subject of study, they are a uniquely human response to intense feelings. Understanding these categories reveals that crying is a complex, multi-functional process essential for ocular health and emotional expression.
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Sources
- Summary by Intellect · source: Why do we cry? The three types of tears - Alex Gendler
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