...This category includes all invertebrates and the vertebrates fish, amphibians, and reptiles. They are commonly called cold-blooded animals because they feel cold to the touch, but in some cases their body temperature may be higher than ours, so cold-blooded is not an accurate description. Cold-blooded animals generally generate less heat through metabolism, and do not have mechanisms for retaining heat, such as feathers or hair, so heat generated within the body is quickly expelled from the body. *Some of the terminology that refers to "cold-blooded animal" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…無脊椎動物全部と,脊椎動物の魚類,両生類,爬虫類がこれにあたる。われわれが触れて冷たく感じるところから俗に冷血動物cold‐blooded animalともいわれるが,場合によっては体温がわれわれより高いこともあるので,冷血というのは正確な表現ではない。 変温動物は一般に,物質代謝による発熱量が少ないうえに,羽毛や毛といった熱を保持するような機構を備えていないので,体内で生じた熱はどんどん体外に出ていく。… ※「cold-blooded animal」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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