What is the difference between respiration by diffusion and cutaneous respiration? Does blood participate in cutaneous respiration?

What is the difference between respiration by diffusion and cutaneous respiration? Does blood participate in cutaneous respiration?
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Cutaneous respiration is not as simple as diffusion. In diffusion the gases diffuse directly between the external environment and the cells. In cutaneous respiration molecular oxygen penetrates through the skin and it is collected by the blood circulation that then distributes the gas to the tissues. Carbon dioxide is also collected from the tissues by the blood and taken to the skin to be eliminated to the environment. So there is important participation of blood in cutaneous respiration. Breathing Process Review - Image Diversity: cutaneous respiration
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