............ It softens the food to be easy to swallow
Saliva
Tongue
teeth
............a long tube which allows food to pass from pharynx to stomach.
Small intestine
Esophagus
Stomach
Food is completely digested ............ by the help of digestive juices secreted by liver and pancreas.
in the stomach
in the large intestine
in the small intestine
The digestive system is responsible for digesting food and changing it from a simple form into complex one.
True
False
Both animals and humans need nutrients to gain energy.
........................ allows food to pass from pharynx to stomach.
............store fats in their humps to adapt to the desert environment.
Cats
Cows
Camels
.............has more than one stomach to digest grass easily.
Cat
Dog
Cow
The digestion process starts in the ...............
mouth.
Dogs teeth are sharp because they .......................
eat grass
eat fruits
eat meat