Blood vessel

Japanese: blood vessel(英語表記)bloodvessel
Blood vessel

…Oxygen is essential for cells, and ultimately for the survival of an individual, but there are various ways for animals to take in oxygen, ranging from simply absorbing it from the body surface by diffusion to using respiratory pigments as carriers and transporting it to the site of gas exchange through the circulatory system, depending on the evolutionary stage of the animal. Blood is a body fluid that contains respiratory pigments, and the vessels that carry it are called blood vessels. The vascular system is formed as a structure within the mesodermal tissue that develops between the ectoderm, which covers the outer surface of the body, and the endoderm, which covers the inner surface. …

*Some of the terminology that refers to "blood vessel" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…酸素は細胞,ひいては1個体が生きていくために不可欠なものであるが,その取入れ方は単に体表面から拡散によって取り入れるものから,呼吸色素を担体とし循環系によってガス交換の場に運ばれるものまで,動物の進化段階に応じてさまざまな方式がとられる。血液は呼吸色素を含む体液で,それを入れる脈管を血管blood vesselという。血管系は,体の外表面を覆う外胚葉と内表面を覆う内胚葉の間に中胚葉組織が発達した後,その中の構造として形成される。…

※「blood vessel」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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