Chapter Name: Movements in Animals
Activity Name: Different types of joints in Movements in Animals
The experiment aims to understand the different types of joints in the human body and how they facilitate movement.
By using a meter scale and observing the movement of the elbow joint, participants will explore the concept of joints and their role in allowing bones to move.
- Meter scale
- Friend or partner to assist in the experiment
Step by Step Procedure:
- Place the meter scale under your arm so that your elbow is positioned at the center of the scale.
- Ask your friend or partner to tie the scale and your arm together, ensuring it is secure and does not cause discomfort.
- Attempt to bend your elbow while the scale is attached.
- Observe and note down your findings regarding the ability or inability to bend your elbow.
When attempting to bend the elbow with the scale attached, it will not be possible to achieve a full range of motion. The presence of the scale restricts the movement of the elbow joint.
- Ensure that the scale is tied securely but not too tightly to avoid discomfort or injury.
- If at any point during the experiment you experience pain or discomfort, stop immediately and seek assistance.
Lesson Learnt from Experiment:
Through this experiment, we learn that bones alone cannot bend or facilitate movement. The human skeleton is composed of multiple bones, and the ability to move different parts of the body is made possible by joints. Joints are the points of articulation between bones, allowing for various types of movement such as bending, rotating, or sliding.
Ligaments, in addition to muscles, play a crucial role in connecting and stabilizing the bones at these joints. Without joints, our bodies would not have the flexibility and range of motion required for everyday activities.