where saliva is added and food is broken down by the teeth, a tube that squeezes food into the stomach, where acid is added to break down food into nutrients, where nutrients like sugar are absorbed, where water is removed, where feces (poo) is stored.

What happens where in the digestive system

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？