لماذا تدمع العيون بعد التثاؤب

16 يونيو 2013

هناك أنبوب يربط بين زاوية العين والأنف ، وفي أعلى هذا الأنبوب توجد القناة الدمعية

وعندما تتثاءب فإن عضلات الوجه تضغط هذه القناة مما يجعل الدموع الزائدة

تخرج من القناة الدمعية، فتظهر العيون كأنها تدمع.

جسم الانسان، معلومات علمية، معلومات ثقافية

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أخر المواضيع من قسم : جسم الانسان، معلومات علمية، معلومات ثقافية

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أخر المواضيع من قسم : جسم الانسان، معلومات علمية، معلومات ثقافية

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