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