鸡皮疙瘩–第 3 级
03-04-2024 15:00
当我们感到寒冷、看恐怖电影或听喜欢的歌曲时，皮肤上可能会起小疙瘩。
这些小疙瘩被称为鸡皮疙瘩；它们是我们身体上的微小肌肉，能收紧我们的头发，使其竖立起来。这些鸡皮疙瘩是对强烈情绪的不自主反应。
对动物来说，鸡皮疙瘩还有一个实际的作用。当动物的毛发竖起来时，会让动物看起来更大，并有助于保护动物免受捕食者的伤害。在寒冷的时候，一层隆起的毛发还能帮助动物保暖。据专家称，鸡皮疙瘩并不是人类的生存反应。它们是极端情绪引发肾上腺素激增的结果。
您可以观看本页下方的视频新闻。
尽管鸡皮疙瘩对动物有实际用途，但为什么专家说鸡皮疙瘩不是人类的生存反应呢？
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