14. Dissection of fish head to show the gas exchange system
- 01:02 Why do the gill filaments look red?
- 01:08 Why do the gill filaments need a large surface area?
- 01:45 What is the function of the gill rakers?
- 01:50 What do you notice about the structure of the gill filaments?
- 01:55 Why is the structure of the gill filaments important to their function?
large fish head
Scalpel and scissors
Cuts to skin
Cut downwards and away from body