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A member asked:
What causes tears in the eye to come out of yawning?
2 doctors weighed in across 2 answers
Muscle contraction: It is believed that the muscle contractions which occur during yawning squeeze tears out of the lacrimal gland and/or lacrimal sac while yawning.
Answered 10/16/2017
4.9k views
Synkenesis: Synkinesis is the result from miswiring of nerves after (injury) trauma. This can involuntary muscular movements or actions accompanying voluntary movements. For example, yawning can cause the lacrimal gland, that produces tears, to contract and tear or your eye lid to close.
Answered 8/31/2013
4.9k views
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