Renal tubule

… The external shape also differs depending on the animal. Generally, there is a pair of left and right kidneys, but in cartilaginous fish and bony fish, the left and right kidneys are fused together, in birds, the kidney is divided into three lobes, anterior, middle and posterior, and in mammals, the kidney is divided into three lobes, from the bean-shaped kidney commonly seen in mammals to the lobular kidney consisting of many small kidneys (Figure 3). The kidney is a collection of many renal units, or nephrons, and the renal unit is a structural unit that performs the excretory function, consisting of the renal corpuscle (Latin name: corpusculum renis, English name: renal corpuscle) and the renal tubule (Latin name: tubulus renalis, English name: renal tubule). The glomerulus, which is supplied with renal arterial blood, is surrounded by Bowman's capsule, and these two together are called the renal corpuscle. …

*Some of the terminology that mentions "renal tubule" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　外形も動物により異なり，一般には左右1対であるが，軟骨魚類や硬骨魚類のように左右が融合したり，鳥類のように前･中･後葉と3葉に分葉したり，哺乳類の腎臓でも普通にみられるソラマメ型から多くの小腎からなる葉状腎をもつものまで多様である(図3)。　腎臓は多数の腎単位，すなわちネフロンnephronの集合したもので，腎単位は腎小体(ラテン名corpusculum renis，英名renal corpuscle)と尿細管(ラテン名tubulus renalis，英名renal tubule)とからなり，排出機能を営む一つの構造単位である。腎動脈血の供給を受けている糸球体とそれを包むようにしてボーマン囊Bowman’s capsuleがあり，この両者をいっしょにして腎小体という。…

※「renal tubule」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