 Answer:：Inferior mesenteric artery · The inferior mesenteric artery is the third unpaired branch of the aorta. · It is a much smaller calibre vessel compared with the coeliac trunk or superior mesenteric artery. · It supplies blood to the mid transverse colon through to the proximal rectum. · Branches of the internal iliac artery supply the middle and distal rectum and anal canal. · The watershed area is the region of colon between the supply of the superior mesenteric artery and inferior mesenteric artery, and is more vulnerable to ischaemia. Notes: 1. inferior [ɪnˈfɪriə(r)] adj. 下级的 2. mesenteric [mesən'terɪk] adj. 肠系膜的 3. aorta [eɪˈɔ:rtə] n. 主动脉 4. coeliac ['si:lɪˌæk] adj. 腹的，下腹的 5. colon [ˈkoʊlən] n.结肠 6. rectum [ˈrɛktəm] n. 直肠 7. iliac ['ɪlɪˌæk] adj.髂骨的 8. ischaemia [ɪˈski:miə] n. 缺血 来源：每天朗读一段医学影像学英语文章 圈主 深圳市人民医院放射科副主任医师杨敏洁 |
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