The obstruction can take place at the teeth just behind the teeth, a little further behind the teeth in an area called the hard palate at the back of the mouth, the soft palate at the back of the throat and further down in your throat.
梗阻可以發生在牙齒的正後方,在牙齒後方稍遠的地方,稱為口腔後方的硬顎,咽喉後方的軟顎,再往下就是咽喉。