Movement

The skeleton, joints and muscles in our body work together to allow us to move. In this topic we will learn about the important bones, joints and muscle pairs that allow us to move, and what happens when we damage them.

Task 2b: Make notes that:

• List the 4 main functions of the skeleton

• Explain the role of bones in the immune system

• Name the cells and minerals that bones are made up of.

• Explain why bones need to be slightly flexible (think about jumping and falling).

• Give the number of bones in the human body.

• Explain how the skeleton is adapted to carry out the 4 main functions. Use examples and write in full sentences.

Task 4b: Make notes that:

• Describe where muscles are found in the body

• Explain how muscles work (slide 9)

• Define antagonistic muscle pairs

• Draw two simple diagrams of an arm: one straight and one bents, showing the antagonistic muscle pair that move the forearm

• In each diagram, colour the contracting muscle in red and the relaxing muscle in blue.

Task 4c: Copy and complete the paragraph

To bend your arm, your bicep ___________. This will pull the ________ of you upper arm and lower arm closer together so your arm _________. When the bicep contracts the triceps _____________ and gets longer and thinner.

To straighten your arm your _________ contracts. This pulls the bones of your lower arm and upper arm further apart so your arm ____________. If the tricep contracts then the ____________ relaxes and gets ___________ and thinner.

Task 5b: Make notes that:

• Explain how muscles get energy to do work

• Define aerobic respiration

• Give the word equation for aerobic respiration

• Explain why muscles become tired when we exercise

Task 7c: Make notes that:

• Draw and label the structure of a tooth.

• Add notes about the structure as you read the slides.

• Define enamel, dentine and pulp

• List the functions of teeth

• Name the type of foods that are associated with tooth decay.

• Name the micro-organisms that live in our mouths.

• Name the substance they make that causes tooth decay.

• Explain why there is no pain when the cavity breaks through the enamel

• Give ways to decrease tooth decay

Complete the quizzes to check your understanding of this unit