Answer:
Accesary organs: Accesary organs are those organs which are helpful in the digestion of food materials but they are not the parts of digestive track. These organs are present in the mouth i. e. tongue, saliva and teeth. The food is teared and crushed into pieces with the help of teeth due to their pointed structure. Saliva contains salivary glands which mixes with the food and starts the breakdown of food substance.