A lump in the throat caused by the expansion of the glottis Bashny.Net

Probably everyone in the world know this unpleasant feeling, with a strong bitterness, frustration, sadness and compassion fit in the throat as if there is someone who can not be swallowed. In fact, this "someone" - evidence that your autonomic nervous system (ANS) is currently struggling with stress.

When a person is experiencing strong negative emotions, such as grief and sadness, ANS reacts the same way to anger or fear: strives to saturate the body with oxygen. To do this, it makes you breathe faster and extends the part of the throat called the glottis to penetrate the air faster. So you can make swallowing movement, the glottis should be closed. The feeling of muscular resistance to closing the gap in time when you are trying to take a sip, and is the "lump in the throat».

via factroom.ru