This lesson contains 15 slides, with interactive quizzes and text slides.
Lesson duration is: 45 min
Items in this lesson
Welcome!
Today:
Nutrition game
Explanation about digestive system (page 97)
Making exercises
Slide 1 - Slide
What are we going to learn today?
Today we will be learning:
What the digestive system consist of.
What the function of your teeth are related to your digestion.
What perastaltic movements are.
How your digestive juices break down food.
Slide 2 - Slide
The digestive system
In your digestive system foods get, well, digested. This means:
- The good nutrients are taken in by your body.
- The rest of the food gets removed from your body.
Slide 3 - Slide
Your teeth
The food you eat needs to go through your whole intestinal tract (about 15 meters!). So the food needs to get smooth, whole and wet. All that happens in your mouth. You chew it and your salivary glands add saliva.
Slide 4 - Slide
Your teeth
Besides that, by chewing your food you create more surface. This means more space for digestive juices to attach to and digest food more easily. This is a way of mechanical digestion.
Slide 5 - Slide
Perstaltic movement
Your food gets transported and kneaded by muscles that are in the walls of the digestive organs. That way your body makes sure the food goes the right way. This is done through peristaltic movements.
Slide 6 - Slide
Digestion
Your food gets digested mostly by digestive juices, which get made by digestive glands. Digestive juices are mostly water, with enzymes dissolved in it. Enzymes change the molecules of the nutrients by cutting them in pieces. That makes is easier to absorb it and use it.
This is called chemical digestion.
Slide 7 - Slide
Digestive juices
Slide 8 - Slide
Enzymes
Slide 9 - Slide
Time to work!
The homework for next lesson are the exercises of paragraph 2.2, including the summary and plusexercises.
Slide 10 - Slide
Function of your teeth
Slide 11 - Mind map
The enzyme lipase is dissolved in your saliva. What does this make saliva?
A
Digestive gland
B
Enzyme
C
Digestive juice
D
Digestive substance
Slide 12 - Quiz
People often say it's healthier to chew thoroughly on your food. Why is that? Name 2 reasons.
Slide 13 - Open question
Saliva is a digestive juice that mostly digests nutrients that are high in energy. Do they digest protein?
A
Sure
B
No way
Slide 14 - Quiz
Statement: In every digestive juice are the same enzymes because they all digest food.