Digestion

Task 2b:  Make notes that:

• Describe the differences in cells, tissues and organs

• List the different parts of the human digestive system

• Explain the job of the different parts of the human digestive system

• Match the parts of the digestive system to their jobs on slide 19

Task 3b:  Make notes that:

• Define the following:

Mechanical digestion

Chemical digestion

Absorption

Egestion

• Complete the following:

• Food is ______ into cut into small pieces and mixed with ______ in the mouth to start digestion. When food reaches the _______ it is churned and mixed with ____ and enzymes to break it down further. Food passes into the _____ intestine. Here nutrients from the food pass into the _____. In the _____ intestine water is removed from the waste to make waste _____. Waste then leaves the body through the ____ as faeces. This is called egestion.

Task 4b:  Make notes that:

• Describe what is meant by surface area.

• Describe how the human digestive system is adapted to make digestion efficient.

• Explain why having a large surface area in the small intestine helps us absorb nutrients from our food. 

• Define the following:

Bacteria

Saliva

Enzyme

Task 4b:  Make notes that:

• Describe what a catalyst is.

• Describe what an enzyme is.

• Explain the role of enzymes in digestion. Draw a labelled diagram to help.

• Explain why we need different types of enzymes.

Complete the test for this topic - make sure you get the pass mark

Make a comic strip that explains the passage of a cheese and ham sandwich (or other food of your choice) as it travels through your digestive system.

Try to name all of the organs and enzymes involved.