View full lesson: http://ed.ted.com/lessons/why-do-we-cry-the-three-types-of-tears-alex-gendler
Whether we cry during a sad movie, while chopping onions, or completely involuntarily, our eyes are constantly producing tears. Alex Gendler tracks a particularly watery day in the life of Iris (the iris) as she cycles through basal, reflex and emotional tears.
Lesson by Alex Gendler, animation by The Moving Company Animation Studio.
Tagged under: Alex Gendler,The Moving Company Animation Studio,Iris,eye,tear,cry, cry,basal tears,reflex tears,emotional tears,bodies,human bodies,TED,TED-Ed,TED Ed,TEDEducation
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