Jejunum and ileum空肠,回肠区 别 Characteristic.特点 Jejunum空肠 leum回肠 Position位置 Upper 2/5 Lower 3/5 Diameter管径 Greater Less Wal管壁 Thicker Thin Circular folds环状| Larger, numerous Fewer, smaller Vascularity管分 Greater Less Colour颜色 Deeper red Paler pink Lymphatic Solitary Aggregated follicles淋巴滤泡Jejunum and ileum空肠，回肠区 别 Characteristic特点 Jejunum空肠 Ileum回肠 Position位置 Upper 2/5 Lower 3/5 Diameter管径 Greater Less Wall管壁 Thicker Thin Circular folds环状 襞 Larger, numerous Fewer，smaller Vascularity血管分 部 Greater Less Colour颜色 Deeper red Paler pink Lymphatic follicles淋巴滤泡 Solitary Aggregated