好词典

ileum

UK //ˈɪliəm//US //ˈɪliəm//

词源

源自拉丁语 'ileum',原意为'腹部的',后特指小肠的特定部分。

noun

❶ 回肠,小肠的最后一段,位于空肠和盲肠之间,主要负责吸收维生素B12和胆汁盐等营养物质。

“The ileum is the third part of the small intestine.”

(回肠是小肠的第三部分。)

“Nutrients are absorbed in the ileum before reaching the large intestine.”

(营养物质在到达大肠之前在回肠被吸收。)

同义词:small intestine section, intestinal segment

常见短语

terminal ileum — 指回肠的末端部分,靠近与盲肠连接处,是许多消化系统疾病的好发部位。

“The biopsy was taken from the terminal ileum during the colonoscopy.”

(在结肠镜检查期间从末端回肠取了活检。)