為什么青蛙吞食時要眨眼

          日期:2019-7-14我要薦稿

          青蛙捕捉到食物后是未經咀嚼就吞下去的,因此在喉嚨口就很難下咽,需要有一個向里推的力量才能將食物咽下去,而青蛙的眨眼就是這樣一種力量。因為當青蛙的眼肌收縮時,眼球能稍向口腔突起,產生一種壓力,促使口腔中的食物下咽。所以,青蛙吞食時要眨眼。

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