鸡皮疙瘩–第 2 级
03-04-2024 15:00
鸡皮疙瘩是皮肤上的小疙瘩，当我们的头发竖起来时就会出现。我们通常在害怕、兴奋或生气时会起鸡皮疙瘩。
鸡皮疙瘩对动物非常有用，因为鸡皮疙瘩会让动物看起来更大。这样，动物就不会受到捕食者的攻击，有助于它们生存。此外，隆起的毛发或皮毛还能在寒冷时为动物保暖。
专家说，人并不需要鸡皮疙瘩来生存。当我们感到寒冷、观看恐怖电影或聆听喜爱的歌曲时，就会起鸡皮疙瘩。强烈的情绪，如恐惧或愤怒，会让我们的身体分泌更多的肾上腺素。肾上腺素是一种荷尔蒙，会让心跳加快，从而引起鸡皮疙瘩。
您可以在三级部分观看原始视频。
动物起鸡皮疙瘩的目的是什么？除了生存，为什么人类在不同情况下也会起鸡皮疙瘩？
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