oesophagus - tube running from mouth to stomach, stomach - organ where food is broken down, large intestine - organ where mainly water is absorbed into the blood, small intestine - organ where nutrients are absorbed into the blood, digestive system - series of organs that break down food,

Digestive System Lesson 1

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?