Digestive system of the body and its functions

Subject : 

PHYSICAL AND HEALTH EDUCATION ( PHE )

Term :

THIRD TERM LESSON RESOURCES

Week:

WEEK 2

Class :

PRY 3 PHE THIRD TERM E-NOTE

Previous lesson : 

The pupils have previous knowledge of

Systems of the Body and their functions 

that was taught in the previous lesson

Topic :

Digestive system of the body and its functions

Behavioural objectives :

At the end of the lesson, the pupils should be able to

• 1. say the meaning of digestive system2. list the parts of the digestive system

  3. draw and label the digestive system

  4. explains the functions of the digestive system

 

Instructional Materials :

• Wall charts
• Pictures
• Related Online Video
• Flash Cards

Methods of Teaching :

• Class Discussion
• Group Discussion
• Asking Questions
• Explanation
• Role Modelling
• Role Delegation

 

Reference Materials :

• Scheme of Work
• Online Information
• Textbooks
• Workbooks
• 9 Year Basic Education Curriculum
• Workbooks

 

Content :

Digestive system of the body and its functions

 

 

DIGESTIVE SYSTEM

The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body. The digestive organs also move waste material out of the body. Digestion of food is essential for our day to day activities as energy is needed for most of our activities and we can only get energy when we eat good nutritious food  

The enzymes in saliva help to break down foods, and the lubrication function of saliva makes it easier for food to be swallowed.

PARTS OF THE DIGESTIVE SYSTEM

The Mouth : We introduce food into our body by putting them in our mouth and chew before we swallow 

The Gullet or Esophagus : This is the tube that connects the mouth with the stomach 

Stomach : The is the store house for the food that we eat . When the stomach is filled up, then we feel full and we cannot eat any more food . The food stays in the stomach for about six hours before digestion starts .

Small intestine : This is where the food particles are absorbed into the body system 

Large Intestine : The storage for unabsorbed or undigested left over food particles 

Anus : This is the passage in between our buttocks that let out waste product of digestion as feaces

Pancreas

Liver

Gallbladder

Colon (large intestine)

Rectum

Anus

FUNCTIONS OF THE DIGESTIVE SYSTEM

The function of the digestive system is to break down the foods you eat, release their nutrients, and absorb those nutrients into the body

Diagram of the digestive system

 

 

 

 

Presentation

 

The topic is presented step by step

 

Step 1:

The class teacher revises the previous topics

 

Step 2.

He introduces the new topic

 

Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise

 

 

Conclusion

The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.

 

Evaluation

• Explain the meaning of the digestive system
• Mention four digestive system organs
• Where does digestion of food starts from
• What is digestion
• For how long does food stay in the stomach
• The morning meal or food is called  ?
• The afternoon meal is called ?
• The last meal of the day is called ?

 

1. What is the main function of the digestive system?
A) To break down food into small pieces that can be absorbed by the body
B) To produce hormones that help control the body’s functions
C) To clean the blood
D) To produce enzymes that help break down food

2. What is the first part of the digestive system that food comes into contact with?
A) The small intestine
B) The stomach
C) The large intestine
D) The mouth

3. What is the function of the stomach?
A) To produce enzymes that help break down food
B) To produce acids that help break down food
C) To store food
D) To mix food with digestive juices

4. What is the function of the small intestine?
A) To absorb food
B) To produce enzymes that help break down food
C) To mix food with digestive juices
D) To remove toxins from the food

5. What is the function of the large intestine?
A) To absorb food
B) To produce enzymes that help break down food
C) To store food
D) To remove toxins from the food

6. What is the function of the liver?
A) To produce enzymes that help break down food
B) To produce hormones that help control the body’s functions
C) To store food
D) To detoxify the blood

7. What is the function of the pancreas?
A) To produce enzymes that help break down food
B) To produce hormones that help control the body’s functions
C) To store food
D) To produce insulin

8. What is the function of the gallbladder?
A) To store food
B) To produce enzymes that help break down food
C) To produce hormones that help control the body’s functions
D) To detoxify the blood

9. What is the function of the small intestine?
A) To absorb food
B) To produce enzymes that help break down food
C) To mix food with digestive juices
D) To remove toxins from the food

10. What is the function of the large intestine?
A) To absorb food
B) To produce enzymes that help break down food
C) To store food
D) To remove toxins from the food

Assignment

Prepare for the next lesson by reading about

 

Muscular system