Understanding the Functions of a Skeleton: Protection, Support, and Movement, Exercises of Physiology

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Success Criteria

Aim

• I can identify and explain the three main functions of a skeleton.
  • I can identify parts of the skeleton that protect the body.
  • I can identify parts of the skeleton that support the body and help it move.
  • I can explain how different parts of the skeleton work.

Purpose of a Skeleton

Go to BBC Bitesize to find out about how the skeleton supports and protects the body.

https://www.bbc.co.uk/bitesize/topics/z9339j6/articles/zqfdpbk

Protection

Complete Task 1 – ‘Protection’ on the ‘Skeleton Functions’ sheet.

Answers

All Fall Down!

One of the functions of a skeleton is to support your body. What would happen if you had no bones in your body? Which part of the skeleton keeps your body upright? Complete task 2 – ‘Support’ on your ‘Skeleton Functions’ sheet. Using a different coloured pencil, colour in the main bones that keep your body upright.

Joints

ball and socket hinge gliding Ball and socket joints allow the most freedom of movement. One example in the human skeleton is the between the pelvis (hip) and femur (upper leg bone). Without joints connecting our bones we would not be able to move the way we do. We would not be able to bend, jump and skip to name a few movements. There are 3 different types of joints in the body. Hinge joints allow flex and extend movements. One example in the human skeleton is between the humerus (upper arm bone) and radius/ulna (lower arm bones). Gliding joints are also known as ‘plane’ joints. The bones are shaped to glide over one another and allow for small limited movements in different directions. One example in the human skeleton is the wrist bones.

Skeleton Functions

Complete Task 3 - ‘Joints’ on your ‘Skeleton Functions’ sheet.