PPT: Digestive System | Science for Class 4 PDF Download

 Page 1


THE HUMAN BODY
Our Digestive System
Page 2


THE HUMAN BODY
Our Digestive System
D I G E S T I O N
As soon as we bite food, such as a
sandwich, it starts a journey
through our digestive system. The
entire process of digestion takes
about 3-4 hours.
Page 3


THE HUMAN BODY
Our Digestive System
D I G E S T I O N
As soon as we bite food, such as a
sandwich, it starts a journey
through our digestive system. The
entire process of digestion takes
about 3-4 hours.
The different organs of a digestive system are the Mouth,
food pipe, stomach, liver, pancreas, small intestine, large
intestine and anus.
Page 4


THE HUMAN BODY
Our Digestive System
D I G E S T I O N
As soon as we bite food, such as a
sandwich, it starts a journey
through our digestive system. The
entire process of digestion takes
about 3-4 hours.
The different organs of a digestive system are the Mouth,
food pipe, stomach, liver, pancreas, small intestine, large
intestine and anus.
MOUTH
The teeth in the mouth grind the food into smaller pieces. 
Saliva present in the mouth makes the food soft and turns it
sweet. This happens because saliva converts starch in the
food to sugar.
Page 5


THE HUMAN BODY
Our Digestive System
D I G E S T I O N
As soon as we bite food, such as a
sandwich, it starts a journey
through our digestive system. The
entire process of digestion takes
about 3-4 hours.
The different organs of a digestive system are the Mouth,
food pipe, stomach, liver, pancreas, small intestine, large
intestine and anus.
MOUTH
The teeth in the mouth grind the food into smaller pieces. 
Saliva present in the mouth makes the food soft and turns it
sweet. This happens because saliva converts starch in the
food to sugar.
FOOD PIPE
From the mouth, the food gets swallowed into the food
pipe also known as the esophagus. 
The food pipe takes the food to the stomach.