SYSTEMS IN THE HUMAN BODY NATURAL SCIENCE ORIGINAL.pptx

Life Sciences slides regarding human systems.

1. SYSTEMS IN THE HUMAN BODY DIGESTIVE SYSTEMS Grade 9

2. OBJECTIVES : At the end of the lesson learners should be able to: 1. Define digestive system 2.Know the importance of food 3. Describe organs that makes up the alimentary canal 4. Explain the five processes occurring in the digestive system

3. QUESTION WHAT IS DIGESTION OR ORGANS ASSOCIATED WITH DIGESTION?

4. Video of a digestive system

5. What is digestive system? The digestive system breaks down food into small particles (molecules) so that it can be absorbed into the bloodstream and transported throughout the body.

6. THE IMPORTANCE OF FOOD It provides the body with energy It supplies the body with materials for growth Has nutrients that repairs and replaces damaged tissue Protects the body from disease and infections.

7. Alimentary canal Alimentary canal it’s a long tube extending from the mouth to the anus. It is made up of the mouth cavity, oesophagus , stomach, small intestine, large intestine, rectum and anus. ASSOCIATED ORGANS Organs which assist in the digestion process- the teeth, tongue, liver and pancreas.

8. Mouth Cavity

9. Oesophagus

10. Stomach

11. Small Intestine

12. Large Intestine Muscular tube that extends from the small intestine to the anus. Serves as a temporary storage place for undigested waste material (Faeces) What is the other name of the large intestine?

13. Rectum & Anus Egests faeces out of the body

14. Digestive System processes