Biology Practical: Dissection of Lungs

GCSE Biology Practical - Dissection of Lungs

By examining and dissecting a pair of lungs, students can gain a greater understanding of the structure of the organ, the texture and the way it connects and works in relationship to the heart. The lungs deliver oxygen and remove carbon dioxide from the blood.

GCSE Biology practical - Lung Dissection

1. Look at the lungs and describe what you can see. Take note of the colour and texture.
2. Look at the trachea and describe what you can see.

• What does the wall look like?
• How does it feel?

3. Cut a piece of the trachea off and take a good look at it, explain why the trachea doesn’t collapse?
4. Cut down the trachea and take a good look, you should be able to see two tubes, bronchioles, that enter the lungs.
5. Look at the tubes that enter the lungs. How do they divide? Using a tube, connected to some form pump, try and inflate the lungs.
6. Touch the lung, and describe what you can feel, the lungs will have a soft spongy texture.
7. Carefully, cut a piece of lung tissue, have a look at the surface, describe what you can see.
8. Drop a piece of the lung tissue into some water, watch what happens. Why does this happen?

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