Anatomy - 4

When thinking about the digestive system, the first organ that comes to mind is usually the stomach but surprisingly, this is not the largest organ in this system. That is, in fact the liver which is actually the largest solid organ in the body. The liver performs several functions among which are cleaning the blood, producing digestive liquids (bile) and storing energy. Again, we can see examples of cross system relationships here.

As well as the liver and stomach, the digestive system is made up of the pancreas and the intestine. The pancreas, like the liver, aids in digestion of food. After food has passed through the stomach and has been 'ground' into tiny pieces, it enters the intestine where the bile is added and the nutrients are extracted from the food. Waste products then move further down the intestine. 

among which      定语从句 

bile    胆汁 

be made up of   由。。。构成 

pancreas     胰腺

intestine     肠子 

aid    帮助 

digestion    消化 

grind  -- ground --- ground     磨碎    has been ground   被摩碎 （被动语态） 

be ground into tiny pieces    被磨成细小碎片/碎末