Reference no: EM132582004
1) What Animals exchange materials across their outer body surface?
2) Land-living Organisms are unlikely to use their outer surface body coverings gas exchange, even if they have a high Surface-Area to volume ratio. Why do you think that is?
3) What advantage is there in having a tracheal system with spiracles? (think about water loss)
4) Label the parts that enable a Frog to carry out Positive - Pressure breathing. Explain the mechanism.
5) Based on your understanding of how Birds breathe, why is their Respiratory System more efficient in gas exchange at High Altitudes? Explain.
6) What are the challenges faced by Marine Fishes (Cod) vs Freshwater Fishes (Perch)?
7) Identify three key features of fish gas exchange system that facilitate gas exchange.
8) Explain how the Counter- Current Exchange system increases the efficiency of oxygen extraction from the water.
9) Explain why ventilation is important.
10) Mammalian Heart: Identify each part.
11) What is the significance of Intercalated discs found in the Mammalian Heart?