Compléter 8th - Digestive System (D)Version en ligne Complete the following sentences. par Andrea Cruz 1 rectum mechanical large esophagus mouth chemical anus saliva bolus small stomach 1 ) Digestion takes place in two main forms : the digestion and digestion . 2 ) Once food enters the , it mixes with and gets chewed through the process of mastication . 3 ) It creates a mass called a . 4 . ) Now , it will go to the . 5 ) The is a sack - like organ filled with hydrochloric acid ( HCl ) , which chemically breaks down food . The stomach breaks down food mechanically by churning . 6 ) The duodenum is a place where the liver , gall bladder , and pancreas join together to digest food . 7 ) The intestine is very long , and absorbs nutrients by using tiny hair - like structures called villi . 8 ) The intestine is very short , but thick , it absorbs the last remaining water and nutrients from waste . 9 ) The and are in charge of finally eliminating waste .