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Bio insects - However in larger insects the tracheal system...

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Arthur Begtine February 1 Respiration in Insects Insects use a very unique way of breathing. Like humans they can live on land, but they don’t use lungs , they actually use a tracheal system. This is consisted of interconnected tubes that penetrate and branch into the body tissues. The tracheoles, which are the finest branches of the system are in contact with individual cells. Gas is exchanged between the tracheal and the tissues. Unlike vertebrates, the circulatory system is in fact not involved in the process of gas exchange. In most insects, the tracheal system opens to the body’s surface through some openings named which are named spiracles. These spiracles are arranged in a row along the abdomen and the thorax. In smaller insects, the air movements and ventilation are in the tracheal are caused by diffusion.
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Unformatted text preview: However in larger insects, the tracheal system uses compressible air sacs for ventilating the tracheal system. system. They also use Body movements to ventilate the tracheal system. Insects might be the most diverse group of animals on earth, this diversity required many modifications to the tracheal system. For example, aquatic insects have a wide variety of tracheal systems adaptations. Some aquatic insects have evolved gills for respiration. Some like the mosquito larva have closed their spiracles except for the last two on the abdomen and have also evolved a siphon, which protrudes above the water’s surface. (Reference:nas.cl.uh.edu/puzdrowski/biology4434/respiration.htm)...
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