Topic Four (1.4): Digestive system

Objectives

By the end of this topic you should be able to:

describe the structure and function of the main parts of the digestive system
describe the process of digestion.

Introduction

You learnt in the last topic how food contains different nutrients. In this topic, you will learn how your digestive system gets the nutrients out of the food you eat.

Working through your coursebook

The digestive system is an example of an organ system. If you didn't study the Year 7 Science course or can't remember what an organ system is, have a look at page 40 and 41 in Smart Activate 1 Links to an external site..

VIEW - Resource 1: Food for Thought PowerPoint (slide 11 & practise labelling slide 12) Download VIEW - Resource 1: Food for Thought PowerPoint (slide 11 & practise labelling slide 12)

Read pages 30–31.
Make sure that you can label the digestive system.
Remember that digestion is not just everything that happens in the digestive system - the real definition must be more specific. Learn the following ‘digestion is the breakdown of large (insoluble) molecules into small (soluble) molecules so that they can pass into the bloodstream’.
Make sure that you know the function of all of the parts of the digestive system. Simulate the movement of food through the digestive system by squeezing a tennis ball through one leg of a pair of tights. (Keep the tights, as you will need them for the next lesson.)

Review

Answer summary questions 1, 2 and 3 on page 31.

You can check your understanding of this topic by completing Question 4 of the interactive Vocab Builder below:

COMPLETE – (Question 4) Biology 2 Vocab Builder 1 (Kerboodle) Links to an external site.

Support activity for this topic

Watch this Revision Monkey video to go over the digestive system if you would like to review it again:

Extension activity for this topic

If you would like an extra challenge, complete the creative writing activity:

COMPLETE - Resource 1: Food for Thought PowerPoint (slide 18) Download COMPLETE - Resource 1: Food for Thought PowerPoint (slide 18)

Check your answers

CHECK - Student Book Answers - Biology 2 Chapter 1 [Not available on sample course]