SCIENCE | Grade 4 | Digestive & Respiratory System #1 | Unit 1 - Concept 1 - Lesson 4

In This Lesson :
•The body of a living organism (human or animal) consists of some systems, that are differ in their structures to perform specific functions to get its needs of food, breathing, .... etc.

• Each system consists of a group of organs that are working together to perform a specific function.

• Digestive system and respiratory system are examples of systems found in the body of human or animal.
Human digestive system
Digestive system
It is the system responsible for breaking down food into small parts to enable the body cells to use them in getting energy.
.Digestion process
It is the process of breaking down food and changing it into chemical substances that the body absorbs and uses them in getting energy and growth.

The structure of the digestive system:..

بالتوفيق
مستر احمد الباشا

SCIENCEGradeDigestive