Insects deliver oxygen to flight muscles and cool the muscles via a tracheal system.

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References

“The flight of flies, too, requires high levels of energy. There is also
a need for large volumes of oxygen in order to burn this energy. The
need for great amounts of oxygen is satisfied by an extraordinary
respiratory system lodged within the bodies of flies and other insects.

“The
fly’s need of oxygen is so high that there is no time to wait for the
oxygen to be delivered to the body cells by the blood. To deal with this
problem, there is a very special system. The air tubes in the insect’s
body carry the air to different parts of the fly’s body. Just like the
circulatory system in the body, there is an intricate and complex
network of tubes (called the tracheal system) that delivers
oxygen-containing air to every cell of the body.

“Thanks to this
system, the cells that make up the flight muscles take oxygen directly
from these tubes. This system also helps to cool down the muscles which
function at such high rates as 1000 cycles per second.” (Yahya 2002: 34)

Book
The Design in NatureJanuary 17, 2002
Yahya Harun

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Living System/s

Organism
A MayflyDipteraSpecies

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