YR1_T2_LSN5

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

Get ready

• Only a pencil 

Everything else in your bag! 

Topic 2 Lesson 5

Plan for today

• Test T1 discussion
• Explanation T2.3 digestion
• Work on homework

Test T1 discussion

We will now look at questions

If there is a question that I should look at, please write the number of the question in the right corner of your paper with pencil!

Test T1 discussion

• Complete your reflection forms on Classroom 
• Write down your 3 smart goals in your notebook. 

Learning goals

• I know the steps of the digestive system
• I know which organs the food goes through and what happens in those organs with the food
• I know the three different types of teeth and what they are used for.
• I understand the difference between a carnivore, omnivore and herbivore and can recognize them by their teeth

Key words

• Ingestion
• Digestion
• Egestion
  
• Enzymes
• Carnivore
• Herbivore
• Omnivore
• Incisors
• Canines
• Molars

• Digestive system
• Stomach
• Large intestine
• Small intestine
• Rectum
• Faeces

Ingestion

• Ingestion is putting food in your mouth.
• Chewing: breaks food down into smaller pieces and mixes it with saliva. 
• Swallowing: the food goes to your esophagus, this tube leads the food to your stomach. 
• Your saliva contains enzymes that help to start the digestion of your food. 
• Enzymes are molecules that help break down your food.

Teeth

There are 3 different types of teeth that help with this process:

Incisors - front teeth that bite off pieces of food

Canines - also help bite off food, predators 

                     use them to hold their prey.

Molars - back teeth that grind our food into smaller pieces

Digestion

• Digestion is the process of breaking 

       down large molecules into smaller ones. 

• The organs that do this are called 

        your digestive system.

• Most digestion with enzymes happens in 

      the oesophagus, stomach and small intestine.

Enzymes

Amylase:  in saliva

Protease:  gastric juice

Lipase:   small intestine

Absorbtion

• After most of the digestion is done , the nutrients get absorbed.
• Most nutrients are absorbed in the  small intestine. 
  
• Water and a few final vitamins are absorbed in the large intestine. 

   

Egestion

• Egestion is the process of removing waste products (pooping)
• Anything your body cannot absorb is combined to form faeces. (scientific work for poop)
  
• This faeces is moved towards your rectum and stored there till you go to the toilet. 

rectum

liver

mouth

stomach

oesophagus

large intestine

small intestine

Homework

Make question 22-31 in your textbook (pages 68-73) 

Prepare questions --> next week practice lesson --> in 2 weeks Quiz