| Front | Describe and explain how the structure of the mammalian breathing system enables efficient uptake of oxygen into the blood ( 6 marks) |
|---|---|
| Back | 1. mouth opens, operculum/opercular valve shuts; 2. floor of mouth lowered; 3. water enters due to decreased pressure / increased volume; 4. mouth closes, operculum/opercular valve opens; 5. floor raised results in increased pressure / decreased volume; 6. high/increased pressure forces/pushes water over gills; |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Alveoli provide walls efficient large surface area; short
Previous card: Young fish hatched species mm long explain oxygen
Up to card list: AQA Biology Flashcards