Question 41 2 pts In most vertebrates air flows in and out through the same air

Question

Question 41 2 pts In most vertebrates air flows in and out through the same air way, However, birds have a system of connected air sacs the allow unidirectional air flow through the lungs making them extremely efficient compared to other vertebrates. Which aspect of gas exchange did birds optimize by having one way air flow? O How many cells make up the respiratory organ O The location of the respiratory tissue in the organism O The distance between the two sides of gas exchange The difference in concentration gradient of the gas O The area along which diffusion can occur 2 pts ?) | Question 42 taration of oxygenated and deoxygenated blood

Explanation / Answer

41. The difference in concentration gradient of the gas.

Birds have unidirectional gas exchange system and to make it more efficient they use the difference in concentration gradient of the gas. Concentration gradient is flow of gas fro high to low concentration region.

36. The area along which diffusion can occur.

Multiple millions of alveoli provides more surface area for gas exchange.

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